How come every time i come from extremely cold weather outside, my hands start burning inside but they are not physically warm. . i'm burning.

So the cold can cause tiny blood vessels in your hands and fingers to constrict.. Usually this can be helped by wearing gloves..

starvation is bad because your body needs nutrition and to deprive it of nutrition can cause problems with both health and fitness.

explanation:

it can make weight loss slow down over time, but it won't cause someone to gain weight depsite restricting calories. starvation causes weakness in the senses like thirst.