Let's be real here. I'm just gonna leave it to the facts: Bodybuilding increases metabolism, a faster metabolism means faster aging. This is true throughout biology.
Not exactly true. Exercise increases oxidative stress, yes, which accelerates ageing, but exercise also increases the production of natural antioxidants like superoxide dismutase. All things considered, a person that exercises moderately 4 times a week will age slower than a sedentary individual, because the increase in endogenous antioxidant production is greater than the increase in free radicals caused by exercise, meaning that the guys who exercises moderately will have less oxidative stress than the sedentary one.
SUCKMYMUSCLE