I believe the answer is asthma
Drugs can cause health problems that can physically impair a person or change he their body works. Using drugs can also affect relationships with anyone. When you feel the need to use the drug, you drop anything and everything to use it. This can sever a close relationship
Positive and negative interactions greatly affect participation in a physical activity. For positive interactions, it encourages participants to have physical activity thus having physical function. Companionship with friends also is a positive effect especially with adolescents. On the other hand, negative attitude would mean the participant would not exert any effort in participating any activity.
Weight Cycling...Facts About "Yo-Yo<span>" </span>Dieting<span>. Weight cycling is the repeated loss and regain of body weight. When weight cycling is </span>the result<span> of </span>dieting, it is often called "yo-yo<span>" </span>dieting<span>.
cited from-</span>http://www.medicinenet.com/script/main/art.asp?articlekey=21745