Depends what you mean. Genetics plays a big role in competitive bodybuilding, but it plays a big role in any sport. Some people are genetically predisposed to p

Depends what you mean. Genetics plays a big role in competitive bodybuilding, but it plays a big role in any sport. Some people are genetically predisposed to put muscle on easier, some people genetically can be leaner, all of these things can help. At the upper levels of the sport you will see people that work very hard, have good genetics, and do lots of steroids.