I see a lot of talk in current threads about the rules for regaining used abilities. Resting rules vs "per-encounter" abilities and such.

Z-Wolf has Short Rests and Long Rests, similar to 5e except that Short Rests are 10 minutes long rather than an hour. Spellcasting-Suffused-ness and Vitality Points reset on a Short Rest. Also, a few rare physical special abilities (like Toughness feat) will require Exerting, which is a once-per-Short-Rest spending of a Stamina point mid-encounter. Together with Momentum, these Short-Rest-based abilities fulfill the role of "per-encounter" powers.

As a side note, I'm thinking gaining Momentum might require two Karma Points. Just so that it's not spammed constantly as the way to spend Karma Points.

Long Rests are still 8 hours (including 6 hours' sleep for most races), and reset your Vitality Points and Stamina Points. Since all types of characters use Stamina Points to refuel themselves, everyone will need Long Rests periodically. But since the ways to spend Stamina Points within an encounter are very limited, most characters can't "nova" and need a Long Rest after just one fight! Long Rests also give a chance to heal more serious Wounded conditions (and things like Diseases and Slow Poisons can get better or worse during a Long Rest). But healing the Wounded condition requires a successful Fortitude Save, so negative conditions can outlast a single Long Rest and require multiple days to recover from.