A good strategy to boost self esteem is to, D: Set ambitious, but realistic goals.
If I had to pick one I would say that it would be because it can extend a joint beyond its regular range of motion.
Love is a personal emotion.
cool downs affect your body by 1 stretching everything after the work out 2 prevent you from hurting yourself 3 help you stay in shape so you can work out more. Warm ups help you with 1 stretching your muscles so you don't get hurt 2 stop you from breaking something 3 helps get your joints into place.