I will mention it since it seems no one touched on it.

Stamina management is very important in this game.
The amount of stamina you have is related to the food you eat.
Most everything uses stamina. Blocking, running, jumping, just getting hit by something.
Stamina will regenerate faster when you are dry, warm and rested.
Even starting a fire out in the open and sitting next to it <x by default> will give you back your rested bonus.