In a sense, yes.
Though, I tend to think of it as being that little bit surplus energy rattling around inside of me as opposed to 'anxiety'.
I also, sometimes reflect that, if around the age of 16/17 I hadn't started to do dumbell curls & presses etc with my Dad's mega over-sized vinyl weights I'd probably be much more prone to being agressive & unreasonable etc.
It is pretty hard to imagine life without the awesome buzz & catharsis of lifting weights. Makes me feel bad for people that just sit & stuff their face with junk & booze it up most nights...<<