Answer: because people have a poor perception of their image.
Explanation:
People who develop an eating disorder such as anorexia and bulimia are people who have low self-esteem. They look in a mirror and do not like what they see of themselves, so they resort to extreme eating behaviors to achieve what they call "ideal weight."
This is an incomplete question. Without further information, it's impossible to answer :( But here's some ideas . . .
Guidelines for narcolepsy - Put your hair in a braid and hang from the wall so you don't fall down
Walking: Try putting 1 foot in front of the other
The warm-up period before a workout allows the persons muscles to stretch out, and work up to the more intense workout, without hurting, tearing, or injuring. It increases heart rate, which loosens up joints, and increases blood flow to muscles, all which prevents the person from getting hurt.