All those baseball players got in trouble for no reason: new research reveals that exercise-related testosterone and growth hormone do NOT play an influential role in building muscle after weightlifting, despite conventional wisdom suggesting otherwise.
Bodybuilders–and professional athletes–who try to manipulate those hormones through exercise routines are wasting their time. Researcher Daniel West says, "A popular mindset for weightlifters is that increased levels of hormones after exercise play a key role in building muscle. That is simply not the case.
"The idea that you can or should base entire exercise training programs on trying to manipulate testosterone or growth hormone levels is false. There is simply no evidence to support this concept."