Originally posted by N.W.O.:

I have sausage, honey, and berries and yet my health only goes up 4.5 every minute when fighting, so Im running around trying to recovery health AND stamina like a chicken . when I dont need the health it heals me to over 100 in seconds wtf

All food has a health regeneration rate. That's the healing done per 10 seconds. Sausage (3), Honey (5), Berrys (1) so that's only 9 health per 10 seconds regen. With rested (+50%) that's bumped up to 13-14 per 10 seconds. However debuffs can knock it down. Wet (-25), Cold (-50%).
So if you're running around unrested, wet, and cold, that's only a couple up regeneration every 10 seconds.
This is why you don't want to fight at night time and why the swamp is so brutal. Low health gen on top of low stamina regen. It's also why being rested is so important. If the buff wears off drop down a camp fire and sit next to it for 30 seconds to get it back.