Men's Group

A very small portion of the population has a very large amount of muscle mass naturally, but many that you see used some type of growth hormone at least at some point. For the vast majority of people, muscles are self limiting in that your body will only allow you to put on so much muscle. The reason for this is because the underlying bone structure is the same regardless of how much muscle there is. At some point joints start to wear out due to the increased stress.