I've definitely seen a change in my behavior. I think with lifting and feeling better about your physical appearance comes a varying level of cockiness and aggression. I'm usually a laid back person but I'm more aggressive now than I've ever been when it comes to dealing with confrontations. I haven't started my first cycle yet either. Also I see it, not a violent way, in my interactions with people at work and when I meet women. I feel better about myself and I think that carries over to most of the things in my life. I'd be lost without the gym.