I have for about three years now been exercising nearly daily. It has taken many different forms, from just simple long walks, to swimming, to running, to hiking. Over the last year or so I have been incorporating strength training 3-4 times per week. I have noticed a few times over the last month or two, as I have tried to up my training intensity, that I feel angrier with people, more quickly annoyed and like it's taking all the restrain I have not to scream at people. If my testosterone levels are going up (because of weight training) could that cause my depression and anxiety to take a more aggressive turn?