Be careful, big guy! You're using the for bodybuilding, right? I've spent time in gyms and every guy i know who's tried steroids has been sorry. It will make your testicles tiny and if you have a social life folks will know. Your libido may change but it's more worrisome that you may have weird moods & thoughts & do something you'll regret terribly. Most women prefer natural. Who likes a cheater / lawbreaker?