Just curious, since I've been taking it with copper for the past few months to help with weight lifting... and it has definitely helped. I feel like I've noticed it helps me concentrate and sometimes even improves my mood, but I'm not sure if it's the Zinc or a placebo, or just nothing at all. I've looked up some of the effects and it plays a role in things like memory and testosterone and whatever... but does anybody have any first-hand experience with zinc supplements making them just feel better or more sociable in general? Anything like that? Anything else?