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    Default Are Halflings rather pudgy?

    I noticed on the base weight for races in the 5th edition player's handbook, the base height for Halflings is smaller than the Gnomes, yet the base weight is the same. Does that mean Halflings are rather overweight to begin with?

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    Default Re: Are Halflings rather pudgy?

    At my tables, yes.

    While halflings aren't necessarily overweight, they most certainly are a bit chubby.

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    Default Re: Are Halflings rather pudgy?

    Well, Halflings were originally just Hobbits from the Lord of the Rings. D&D calls them Halflings because they had to stop using the word Hobbit, but that's still what they were throughout all of 1st and 2nd Editions.

    3rd Edition changed the Halflings to make them a bit less obviously Hobbit-like, slimming them down and giving them shoes and whatnot. They maintained this fitter physique into 4th Edition, but I haven't really delved into 5th so I don't know if the Halflings have gotten chubby again or not.

    I do know that Gnomes became less miniature dwarf and more fey-like in 4th Edition, and if that continued into 5th it might also help to explain the weight difference.
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    Default Re: Are Halflings rather pudgy?

    This is a bit of a thing with you, isn't it?
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    Default Re: Are Halflings rather pudgy?

    Well, yes...

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    Default Re: Are Halflings rather pudgy?

    Well, hobbits are. It depends on how far you go in filing the serial numbers off.

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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by BlackSymphony View Post
    Well, yes...
    I hope you aren't that overt at your gaming table when you play your overweight sorceress (especially if you have women at your table), since I have to admit, you're slowly making me a bit uncomfortable.

    Playing a character you deem attractive is fine (whether they fulfil conventional standards or not), but please don't use the character as some kind of sexual outlet.
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    Default Re: Are Halflings rather pudgy?

    Depends how well feed they are.

    In my setting Halflings tend to be slightly stockier than gnomes but slightly shorter, and when they have access to food tend to become fat at a similar rate to humans. Conversely a gnome will tend to just not each as much as a Halfling, gaining a small layer of pudge that'll vanish after winter.

    Then again my gnomes are dwarven in some ways, having an aptitude for anything quantified (they excel at both sorcery and engineering), just elven in others, while my Halflings are just short humans without the freakishly large head (even though that would cause a difference in memory capacity or something along those lines). So Halflings tend to pudge up a bit more, but they're not automatically pudgy.

    (Although my world also includes fat gnomes, the eating less is at least partially a cultural trait)
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    Default Re: Are Halflings rather pudgy?

    I hope you aren't that overt at your gaming table when you play your overweight sorceress (especially if you have women at your table), since I have to admit, you're slowly making me a bit uncomfortable.

    Playing a character you deem attractive is fine (whether they fulfil conventional standards or not), but please don't use the character as some kind of sexual outlet.
    I'm not, really. It's just a question I had concerning what halflings are like.

    I am sorry if it is making you uncomfortable, though. I just seemed to like the idea of a overweight character enough to play it out. I am not really into it as a kink or somesuch.
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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by BlackSymphony View Post
    I'm not, really. It's just a question I had concerning what halflings are like.

    I am sorry if it is making you uncomfortable, though. I just seemed to like the idea of a overweight character enough to play it out. I am not really into it as a kink or somesuch.
    Don't be sorry; I'm just a random person on the internet.

    You just come across as someone who is into it as a "kink", as you put it, since you talk a lot about obesity on these forums, and that might be a bit off-putting to others at your table.

    Honestly, it would be okay if you had a "kink" in that direction. I think almost everybody has a "kink"

    It's just a good idea not to rub other people's faces in it, since more often than not, it makes them uncomfortable.
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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by aberratio ictus View Post
    Don't be sorry; I'm just a random person on the internet.

    You just come across as someone who is into it as a "kink", as you put it, since you talk a lot about obesity on these forums, and that might be a bit off-putting to others at your table.

    Honestly, it would be okay if you had a "kink" in that direction. I think almost everybody has a "kink"

    It's just a good idea not to rub other people's faces in it, since more often than not, it makes them uncomfortable.
    Alrighty. Thank you.

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    Default Re: Are Halflings rather pudgy?

    Another thing to note: I play 5e and in the Player handbook it gives a flat weight modifier of 1 for each inch for the halfling's height, so I don't know what would classify as an obese Halfling.

    I used some body visualizers for my characters thin and stout to get a good look into what they'd be like, but the halfling was too short to really be visualized. Could somebody help?

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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by BlackSymphony View Post
    Another thing to note: I play 5e and in the Player handbook it gives a flat weight modifier of 1 for each inch for the halfling's height, so I don't know what would classify as an obese Halfling.

    I used some body visualizers for my characters thin and stout to get a good look into what they'd be like, but the halfling was too short to really be visualized. Could somebody help?
    While it's not a fantastic method, you can use the raw math of Body Mass Index, and then look for images with similar BMIs.

    BMI=(Weight in pounds * 703)/Height in inches2

    So, if your halfling is 41" and 64# (about average for a 2nd edition halfling male), your BMI is about 27.

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    You tweak a bit for racial differences, but that gives you a rough approximation.
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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by Mark Hall View Post
    You tweak a bit for racial differences, but that gives you a rough approximation.
    Very rough thugh, in some cases.

    BMI assumes that as someone gets taller their width does not increase in an equal ratio to their length. In other words: short people are relatively broader build than tall people. If they're not the height value would have a third power in there rather than a second. If you're take a person and would literally magic them twice as small in every way you'd make them 8 times as light and halve their BMI. Apparently this works rather well as far as (adult) humans go, but is it true for other fantasy species? Dwarves would be overweight on the BMI scale, as they're even broader than the BMI scale suggest, and in fact probably broader than much taller humans, given they tend to be shorter but just as heavy. Kender would have a low BMI with their petite childlike appearances. If halflings have the same proportions as much larger humans they will have very high BMI's and still not look fat, if they are relatively broader than humans, looking more like miniature dwarves, the scale probably sort of works for them.
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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by Lvl 2 Expert View Post
    Apparently this works rather well as far as (adult) humans go,
    It's actually fairly bad even then. I know a couple of men who should be morbidly obese as far as BMI goes, but who are simply tall and a bit muscular.
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    Default Re: Are Halflings rather pudgy?

    Halflings are roughly half as tall as humans. So cube (root) that sumbeech.

    If you have the same build, a 6', 180lb human would be about 22.5lbs as a 3' halfling. "Halflings average about 3 feet tall and weigh about 40 lbs"... so you are looking at around 320 at 6'. This suggests a pretty damn stocky frame - Dwarf-like, even (again, making halfling-dwarf and gnome-elf parallels). Classic Baggins.

    They are also suggested to be able to pass for children (This comes up in the Adventuer's League info for the Rage of Demons season), so looking at growth curves... At 3.5 years, this would be 5th %ile height (really small) and 95th %ile weight (really heavy). Taller halflings actually fit the human curve better - approaching heavy 6-year olds.

    5th ed art tends to favor a rounder, stockier style of halfling... though with exceptionally large heads and tiny hands and feet. I'd recommend ignoring that, and go more Rankin-Bass.
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    Default Re: Are Halflings rather pudgy?

    It's changed through editions for D&D. They started out as pudgy hobbit-like creatures... size of a child, proportions of a slightly portly adult with large hands and feet. In 3rd Ed, they became skinny and they got pointed ears (more like Kender from Dragonlance than hobbits), but with kind of strangely-oblong heads. In 5th Ed, they've gone back to being hobbits. There was no real reconciliation as to why they became kender and then went back to being hobbits.

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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by Mark Hall View Post
    While it's not a fantastic method, you can use the raw math of Body Mass Index, and then look for images with similar BMIs.

    BMI=(Weight in pounds * 703)/Height in inches2

    So, if your halfling is 41" and 64# (about average for a 2nd edition halfling male), your BMI is about 27.

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    You tweak a bit for racial differences, but that gives you a rough approximation.
    Well, as I pointed out in one of the other threads about adipose tissue TS is making, BMI doesn't really seem to be working for humanoids smaller than ~5 feet.

    It was made for humans, after all.


    ~41'' inches children tend to weight more like 30 pounds, that's more than two times less than 64.


    Of course, 41 inches children are usually about 3-4 years old, so that skews things a bit. Halflings are adult, and developed after all.

    So they would probably have more muscle and skeleton weigh, but still....

    That makes me think that damn, D&D halflings are seriously tiny, BTW.

    Even with 'realism' levels of D&D them operating at the same rules as humans or orc adventurers seem off.
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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by Spiryt View Post
    That makes me think that damn, D&D halflings are seriously tiny, BTW.
    I hadn't noticed, although I have been considering bumping them up to dwarf heights anyway.

    Out of interest, is there a good place to find child heights by ages? My google-fu fails me and I wanted to have halflings closer to 8-10 year olds in height next time I ran a game. I suspect I might have to make all the short races taller to get decent heights on them.

    Although now I understand why Shadowrun limited short races to dwarves. Might do the same, and just have a few dwarf cultures (including a magical one, because why not. Those magic items had to be made somewhere).
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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by Spiryt View Post
    That makes me think that damn, D&D halflings are seriously tiny, BTW.

    Even with 'realism' levels of D&D them operating at the same rules as humans or orc adventurers seem off.
    This was noted in 4e's preview book Races & Classes - hence 4e upping them somewhat in height and weight.

    Even before 4e came out - the D&D Miniatures, as I recall, showed larger halfling models toward the end of its run, than at the beginning - made it easier for them to be more detailed.
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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by Anonymouswizard View Post
    I hadn't noticed, although I have been considering bumping them up to dwarf heights anyway.

    Out of interest, is there a good place to find child heights by ages? My google-fu fails me and I wanted to have halflings closer to 8-10 year olds in height next time I ran a game. I suspect I might have to make all the short races taller to get decent heights on them.

    Although now I understand why Shadowrun limited short races to dwarves. Might do the same, and just have a few dwarf cultures (including a magical one, because why not. Those magic items had to be made somewhere).
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    Those 'halfling' ranges are of course for very young children in humans, so they cannot be just taken like that.

    Adult halfling should probably be a bit bulkier/more muscled, because children aren't.

    On the other hand, 3 years old are still not proportionate, they have huge heads compared to the rest, and skull bones weigh a lot....
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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by aberratio ictus View Post
    It's actually fairly bad even then. I know a couple of men who should be morbidly obese as far as BMI goes, but who are simply tall and a bit muscular.
    Actually, its great for adult people. Wonderfully predictive and nicely tied to morbidity and mortality data. Important to note: adult PEOPLE. As a measure of populations, not of a person. Yup, everyone knows the 400-lb guy who lived to be 92 years old, and the hyper-fit guy who dropped dead of a heart attack while training for his third ultramarathon. Neither of those mean anything when it comes to a discussion of the utility of BMI. The tool is super easy to use, inexpensive and does a good job of measuring what it is meant to measure. Just make sure you're measuring the right things.

    That being said, your morbidly obese example is mistaken (assuming adults)...remember that height is included in the BMI calculation, so increasing height at a given weight lowers BMI. A "bit muscular" isn't going to get someone anywhere near a 40 BMI. Maybe a elite level body builder gets there, but even the linebackers or other high-muscle-low-fat positions are pretty unlikely to be in that category. You'd need to be 300# at 6', or 340# at 6'5". That almost always requires a LOT of body fat. The occasional very short athlete might have a hyper-inflated BMI (Mike Tolbert springs to mind, but even he only comes in at 36.2 BMI) while still being kind of lean, but he's an exception (and maybe not even that lean anymore).

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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by Mordar View Post
    The occasional very short athlete might have a hyper-inflated BMI (Mike Tolbert springs to mind, but even he only comes in at 36.2 BMI) while still being kind of lean, but he's an exception (and maybe not even that lean anymore).

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    Why specifically short athletes? (Your example is 1.75m/5'10" by the way, quite average.)

    If you take a 1.50m/5' 50kg/110lbs person (round numbers for ease of use) and scale them up 1:1 to 2m/6'4" that person now weights almost 120 kg/260lbs, but if you scale them up in such a way as to keep their BMI constant they come in below 90kg/200lbs. (Conversions to imperial off the top of my head.) Wouldn't that mean it's if anything easier for a taller person to get a high BMI by being either very muscled or a little fat? That's what I always figured.
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    Default Re: Are Halflings rather pudgy?

    Not sure about 5e, but in Pathfinder, gnomes are (ever so) slightly taller and slightly heavier on average.
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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by Lvl 2 Expert View Post
    Why specifically short athletes? (Your example is 1.75m/5'10" by the way, quite average.)

    If you take a 1.50m/5' 50kg/110lbs person (round numbers for ease of use) and scale them up 1:1 to 2m/6'4" that person now weights almost 120 kg/260lbs, but if you scale them up in such a way as to keep their BMI constant they come in below 90kg/200lbs. (Conversions to imperial off the top of my head.) Wouldn't that mean it's if anything easier for a taller person to get a high BMI by being either very muscled or a little fat? That's what I always figured.
    Tolbert is pretty short for an NFL player...average height for a "normal man" but not for pro football...and his girth is greater than the average running back at that height (normally players in that range would be "scat backs"...sub-200 pounds). He's kind of a "bowling ball" player, so that's why I chose him.

    There's an error in your calculation...the 5' 110# is a 19.5 BMI...that corresponds to a 160# at 6'4".

    Since the height component is squared, increasing the height while maintaining the BMI requires a greater relative increase in the weight. For instance, a 1.5m 50kg person is BMI 22.22. With each percentage increase in height (m) you need around twice the increase in weight (kg) to maintain that BMI - so a 16% increase in height (to 1.74m) requires a 35% increase in weight (to 67.25kg) to maintain the 22.22 BMI. The taller individual has a squared-increase "advantage" in the denominator, so it requires a significantly larger increase in the numerator to get the bump in BMI.

    So you could sort of say height is protective against a smaller absolute weight gain...but that is frought with peril and can easily be a misapplication of the BMI tool.

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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by Mordar View Post
    The 5' 110# is a 19.5 BMI...that corresponds to a 160# at 6'4".

    For instance, a 1.5m 50kg person is BMI 22.22.
    Which one is it? These are the same rough measurements.
    If I let this thing do the conversion for me it puts 5' and 110lbs at 21.5. That still puts my calculations off by about 30 pounds though. This can be explained by the fact I forgot 4 inches. 2 meter is 6'8". I got confused by Americans often considering 6 feet tall. That makes it feel like it should be close to 2 meters.

    With each percentage increase in height (m) you need around twice the increase in weight (kg) to maintain that BMI - so a 16% increase in height (to 1.74m) requires a 35% increase in weight (to 67.25kg) to maintain the 22.22 BMI. The taller individual has a squared-increase "advantage" in the denominator, so it requires a significantly larger increase in the numerator to get the bump in BMI.
    But thanks to the square cube law, if you'd actually upscale a person by 16% they would become 56% heavier. which means their BMI goes up. Your argument is based on the premise that a taller person will on average, at the same fat percentage and stuff, be just as wide and thin as a shorter person, the only thing changing is their height. That's not really the case in general.
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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by Lvl 2 Expert View Post
    Which one is it? These are the same rough measurements.
    If I let this thing do the conversion for me it puts 5' and 110lbs at 21.5. That still puts my calculations off by about 30 pounds though. This can be explained by the fact I forgot 4 inches. 2 meter is 6'8". I got confused by Americans often considering 6 feet tall. That makes it feel like it should be close to 2 meters.
    2 meters is just shy of 6'7", so it would need around 197 pounds to hit the 22.22 mark. Yes, I wish we all used metric. It would be better.

    Quote Originally Posted by Lvl 2 Expert View Post
    But thanks to the square cube law, if you'd actually upscale a person by 16% they would become 56% heavier. which means their BMI goes up. Your argument is based on the premise that a taller person will on average, at the same fat percentage and stuff, be just as wide and thin as a shorter person, the only thing changing is their height. That's not really the case in general.
    I'm not sure that applies as I'm not using any width/girth assumptions at all. [Aside: Does your calculation assume that we as people are nicely cylindrical? I am now really curious about the impact of our horribly irregular surfaces on the relationship]. I just went with the BMI formula and applied the changes in units of height and weight and then calculated the relative differences. Specifically, if 50kg at 1.5m is BMI 22.22, what is the necessary weight at 1.74m to maintain BMI 22.22? What percentage increase was necessary in both cases (height and weight) and how do they compare.

    Of course height isn't the only thing changing...our (population based) measure of their Body Mass Index accounts for changes in both height and weight, and is unconcerned with actual volume or density of the person.

    My premise is only that it takes a greater fixed amount of weight change for a tall person to increase BMI than for shorter person, and that the relative increase in weight is significantly greater than the relative increase in height to mirror change in BMI.

    Thus, the Freshman 15 is less impactful on BMI for the tall guy than the short guy.

    It is even more difficult for a tall person to be morbidly obese (a defined term tied to BMI of 40) and have "a bit muscular" be an accurate assessment. That's why I used NFL players in my discussion - they are generally tall and (depending on position) very muscular (lean) or very muscular plus have a significant amount of adipose tissue. The player who I thought most modeled the chance to be just muscular but still having a BMI that might approach 40 was Tolbert...and even he missed it by a wide margin. Tackles on both sides of the ball (offensive and defensive linemen) could easily reach and surpass BMI of 40, but to misquote Ms. Mona Lisa Vito, "There's only two kinds of players that could have the weight and height to regularly get a BMI of 40, and those are offensive and defensive linemen, which could never be confused with just being 'a bit muscular.'"

    Maybe it would have been better to approach this from a different angle. Using cutpoints of BMI 25 (top end of healthy), 30 (overweight), 35 (obese) and 40 (morbidly obese), and men of 1.8, 1.9 and 2.0 meters tall...it takes 16kg extra to move the 1.8m man from cutpoint to cutpoint, 18kg to move the 1.9m man and 20kg to move the 2.0m man. Moreover, that means the 2.0m tall BMI 40 guy is 60kg heavier than the top end of the healthy norm level for that height. No way that is considered a small amount of difference, even when spread out across that taller/wider/thicker frame, or is accountable to a modest change in muscularity.

    Now...how far has this conversation wandered from pudgy halflings to weight-conscious whole-lings?

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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by Mordar View Post
    [Aside: Does your calculation assume that we as people are nicely cylindrical? I am now really curious about the impact of our horribly irregular surfaces on the relationship].
    No, it does not. It does assume that as we get bigger, we grow an equal amount in each of 3 dimensions.

    Let's for instance say you have a cat. Your cat is 40cm long, without tail (I insist that this for simplicity's sake is exactly 1'4", whether that means I slightly miscalibrated my centimeter or my inch is up to you) and weights 5kg or 11lbs. Sounds kind of reasonable. Now I want to know how much a 2 meter (6'8", yes, I'm sticking with that one) long tiger weights.

    I could say that the tiger is 5 times as long and thus 5 times as heavy, making is 25kg/55lbs. This is of course silly. That's not a tiger, that's a stretch cat, 5 times longer but no taller or wider.

    A better guess is that the tiger is 5 times as long, 5 times as tall and 5 times as wide, giving it 5*5*5=125 times as much volume and thus weight. This would make the tiger 625kg/1375lbs. That's probably much closer to the truth.

    BMI sits somewhere in between, it assumes that as our cat becomes longer it also becomes taller and wider, but not as much as it gets longer. Using BMI our tiger would come out at 125kg/275lbs. That's a bit on the light side for a 2 meter long tiger.

    Of course we're dealing in extremes here, as well as comparing 2 different species. But the principle is the same. If a thing becomes x times as tall while preserving its proportions it will become x times as wide and x times as tall as well, making it x*x*x times as heavy (assuming the same density). BMI does not follow that curve. Apparently, if you'd shrink the average 2m tall guy down to 1.50m he would look be more slender than the average guy who was 1.50m to start with, because if he wasn't BMI wouldn't be a good measurement.

    Now, looking at short and tall people I'm wildly guessing that we're closer to the proportional tiger model than to the stretch cat model. This would mean that if there is an error in BMI, it's going to be towards tall people having a higher BMI than short people at when having the same body type. If tall people would have a lower BMI with the same body type we'd be closer to the stretch cat model, people short and tall being roughly equally broad/slender in absolute terms.

    The freshman 15 is not named after an exact number that's true for everyone. The heavier guys with larger bodies were already eating more. When everyone start storing 1% of their food intake as fat the big guys gain more weight. Assuming food intake is relatively linear with energy used, which should be pretty strictly related to active organ mass, someone who's two times as heavy, with the same body type, is going to eat about twice as much, and thus in this scenario gain twice as much weight. Their muscles aren't twice as strong, because strength is a property of the surface area of any single slice of muscle, but they do use up twice as much energy. But that's going into a whole different area of the square cube law, where we start explaining why things like running speed and jumping height seem to be barely correlated to the size of an animal while for instance absolute strength, relative strength and survivable fall height are anything but.
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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by BlackSymphony View Post
    I noticed on the base weight for races in the 5th edition player's handbook, the base height for Halflings is smaller than the Gnomes, yet the base weight is the same. Does that mean Halflings are rather overweight to begin with?
    My first 5e PC was a halfling barbarian named Grimfell. He was on the heavy side for a halfling of his height but his body was all muscle. So he looked like a 3'6" version of this:



    Edited for spelling
    Last edited by napoleon_in_rag; 2017-07-05 at 06:15 PM.

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    Default Re: Are Halflings rather pudgy?

    Quote Originally Posted by Lvl 2 Expert View Post
    SNIP

    I could say that the tiger is 5 times as long and thus 5 times as heavy, making is 25kg/55lbs. This is of course silly. That's not a tiger, that's a stretch cat, 5 times longer but no taller or wider.

    A better guess is that the tiger is 5 times as long, 5 times as tall and 5 times as wide, giving it 5*5*5=125 times as much volume and thus weight. This would make the tiger 625kg/1375lbs. That's probably much closer to the truth.

    BMI sits somewhere in between, it assumes that as our cat becomes longer it also becomes taller and wider, but not as much as it gets longer. Using BMI our tiger would come out at 125kg/275lbs. That's a bit on the light side for a 2 meter long tiger.

    Of course we're dealing in extremes here, as well as comparing 2 different species. But the principle is the same. If a thing becomes x times as tall while preserving its proportions it will become x times as wide and x times as tall as well, making it x*x*x times as heavy (assuming the same density). BMI does not follow that curve. Apparently, if you'd shrink the average 2m tall guy down to 1.50m he would look be more slender than the average guy who was 1.50m to start with, because if he wasn't BMI wouldn't be a good measurement.

    Now, looking at short and tall people I'm wildly guessing that we're closer to the proportional tiger model than to the stretch cat model. This would mean that if there is an error in BMI, it's going to be towards tall people having a higher BMI than short people at when having the same body type. If tall people would have a lower BMI with the same body type we'd be closer to the stretch cat model, people short and tall being roughly equally broad/slender in absolute terms.
    I'll try to find some concrete numbers soon...this should be fun to investigate. Interestingly, 50th percentile male baby in the US is 50cm, 3.53kg, BMI 14 (wildly inappropriate population for BMI meaningfulness). Average male adult is 177cm and weight around 88kg, BMI 28. Height increased by 3.5x, weight by 25x. Ignoring the body composition issues, the model you have suggests the man should weigh about 43x as much, right? If we upgrade from newborn to 3 year old, we get 95.4cm and 14.3kg, BMI 16. To go from 3yo to adult we increase height by 1.85x, weight by 6.15x. The equal growth in all areas suggests it should be 6.3x, so that's a lot closer. A glaring weakness here is the fact that obesity/overweight rates for the adult are in excess of 50% in the US, skewing the average, while toddler rates are much much lower, so this is more than just body growth, it is lifestyle change as well.

    But anyway...

    BMI is predicated on insurance M&M data - the ratio was identified as a highly accurate predictor of early death, heart disease, etc., across a wide population. It was not, I believe, developed as an anthropometric model. An Oxford mathematician addressed it from a strictly math perspective and recommends the exponent be raised from 2 to 2.5.

    So in that regard, he suggests that the BMI value should change, but that it wouldn't be tied to the same cutpoints from the M&M data.

    But I think that continues to support my premise that it would take even more additional mass to increase BMI in taller folk...BMI 40 will always be noticeably very large and it takes a lot of weight gain to go from BMI 35 to BMI 40...particularly as the subjects get taller.

    Quote Originally Posted by Lvl 2 Expert View Post
    The freshman 15 is not named after an exact number that's true for everyone.
    Well sure, but...

    Quote Originally Posted by Lvl 2 Expert View Post
    The heavier guys with larger bodies were already eating more. When everyone start storing 1% of their food intake as fat the big guys gain more weight. Assuming food intake is relatively linear with energy used, which should be pretty strictly related to active organ mass, someone who's two times as heavy, with the same body type, is going to eat about twice as much, and thus in this scenario gain twice as much weight. Their muscles aren't twice as strong, because strength is a property of the surface area of any single slice of muscle, but they do use up twice as much energy. But that's going into a whole different area of the square cube law, where we start explaining why things like running speed and jumping height seem to be barely correlated to the size of an animal while for instance absolute strength, relative strength and survivable fall height are anything but.
    ...this opens up tons more complexity. Caloric consumption, utilization and storage depends on so many more things than just starting weight...and I think what is frequently presented as BMR (basal metabolic rate) is far too often really a calculation of what amount of calories are required to remain weight-neutral. That's not a great starting point, IMO. Probably best to save this one for another thread.

    - M
    No matter where you go...there you are!

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