This is because when you exercise you are relaxed and are not thinking about problems,you are mostly thinking about your body.You breath in more deeply and are relaxed.
Yeah. It does. The feel good factor is certainly there. Only a small warning. It appears once you stop. Get addicted to good exercises and you will get over the blues. Appetite improves and so also...
try one or more of these:
visit or ring a friend
take a bath
Remeber Jesus's words: Come to me all you who are weary and heavy laden and I will give you rest. Take my yoke and learn from me for I...