it can lower testosterone for one... it will definitely hinder your gains and if you are prone to anger, its definitely not going to help... i have a new video coming out soon discussing how bad it can hurt your testosterone levels in general... there are going to be guys that say its okay because it wont "kill" you but that doesn't make it smart or good to do whatsoever... i dont recommend it at all... NOT TO MENTION the empty calories as well... there's nothing good about it