-trying to fit in
-peer pressure
-abuse
-fun
-for the "high" feeling
-to be popular
-...uhh..idk..lol
It could be to avoid injuries. One reason why there are several rules in
exercising is to ensure that a person will not get injured during a
workout. Injuries can occur when one is
either handling too much weight, doing the exercise wrong, not using proper
equipment or does not have a partner or trainer assisting him.