does caffeine affect muscle gains
A study to determine the hormonal effects of caffeine on resistance training has not conclusively proven that caffeine can help you build muscle, but it has proven that caffeine does effect both testosterone and cortisol levels.esponse: As you can see from the image to the right, coffee does have its ways of increasing testosterone levels, but Iâm pretty sure thatâs not what you are talking about. Instead, lets look at the effects of caffeine in general, on the hormones that affect muscle growth.