Unfortunately, today's society is heavily prejudiced against the obese and many overweight people suffer socially with depression as a result. It is also worth mentioning that exercise releases endorphins, the body's own "happy drug", which has made exercise one of the cornerstones in today's professional treatment of depression. Exercise builds physical confidence, works out bent-up tensions, jolts the brain chemistry and generally stabilizes your whole system with a general feel-good experience, while lack of exercise achieves the polar opposite.