When do know your stressed. you start getting headaches.. But why do people shack when there stressed out..

Adrenal and cortisol production rocket during anger. Anger burns up energy so these chemicals are designed to give you what you are burning up. When they get to high levels, they will cause you to shake, but this is also a warning sign that you are going into overdrive.  

Explanation:

a lack of sleep can affect body weight. two hormones in the body, leptin and ghrelin, control feelings of hunger and satiety, or fullness.

explanation:

proteins is the answer