Fatigue
Fatigue represents how much strain your body has undergone.
Fatigue has no effect until it surpasses a minimum threshold, which is equal to your Constitution score. For each point beyond that, you suffer a -1 morale penalty to Strength, Dexterity, and Constitution, as well as a 5% failure chance for any action that causes Fatigue.
Fatigue cannot be healed with magic or items. It may only be healed through natural rest.
For every 8 hours of complete rest, you are healed of 1 Fatigue.