Alright, since there is absolutely nothing for me to do, i'm going to make a guide to help out the newbies in ws, altough this guide will probably only be read 20 times. Alright, so you have your four basic needs- Heat, Rest, Thirst, and Hunger. All of those needs are encaved in this halo. The Halo (known as constitution) signifies your overall health.
White Halo= perfect condition
Grey Halo= OK condition/damaged
Black Halo= near death, you're screwed unless you eat something.
Now, note that dieing IS NOT caused by the four needs. The four needs just make the Halo dim whenever those needs are ignored. Which brings me to this point that you will NOT DIE UNLESS IF YOU KEEP ON EATING!
Guaranteed survival-
Eating ALWAYS makes your halo a bit brighter. So let's say that you have all three needs but one (Heat) satisfied. You have a black Halo. You are about to die from Cold unless if you eat something. Eating obviously does not increase heat, but it lowers your constitution so you can live longer. So remember this- whenever you are about to go on a long trip out in the wilderness, or if you have no fire, just keep on eating to prevent death.
Now, how do we get the food? We use a sickle, boys and girls, to get berries. To make a sickle, you must have two rocks, one sap, and one wood.
BLAH BLAH BLAH fail guide. Sorry.