I'm not a 100% sure, what I have noticed is anecdotal so it is up for interpretation. But when I am not burdened by school work I do weights religiously. I noticed that I was not really getting stronger, I had plateaued. I did everything the same but I added whey protein before and after workouts and I noticed my strength and size increasing.

As for the zits I never though about it. I know more weight bearing exercise increases testosterone whereas endurance exercise decrease it, so it could be. I always though it was the protein powder because it is the only variable that I changed and I started to notice zits, and I am long past puberty. Plus, when I was pubescent I only got zits in the winter, never in the summer, and I hit the weights hard in the summer and that is when I supplement.

Maybe what you say is right about hormones, I could have de-stabalised some sex hormones, but I could have been vitamin deficient to, maybe a lack of vitamin A. I really don't have a clue but I think I am curious now and will have to try and find out.

Thanks for getting me thinking, now I have a reason not to study for the 5 exams and 3 papers that are due in the next 2 weeks