Whao . Am glad to come across this post. So men can become aggressive when they have testosterone replacement. I have also seen several women with beard and baritone voice, most time ,they behave like man. I think same thing happened to the tomboys. From this post, I think the testosterone must be moderate in man. When people behave irrationally at times I think we should understand what happened before judging them. We have seen from here that the level of testosterone can affect our behavior. Thanks @starrichie for feeding us this informative post.