Protein question?????????

LOL, the lady said that kids under 18 can't build muscle. So then why do football players in highschool lift weights and eat so much protein? What the GNC lady said is completely wrong. As for your question, I've been taking protein shakes since I was 16, your same age, and I bet you I'm healthier than 99% of the population. I haven't taken mass tech personally, but I've taken weight gainers before such as cytogainer and BSN true mass since I was 16 and I gained a lot of muscle from that. I know a LOT of kids who have been taking protein shakes since they were your age, including things like mass tech. It won't effect you negatively as long as you still consume a healthy diet and only use it to supplement you're current diet. If I were you I would avoid GNC altogether from my personal experience.