I posted a while ago that I was going to add dips to my upper body routine. In the first week of adding them my chest has been noticeably more pumped and defined, but some problems have occurred in my game. On my backhand I ave been noticing a slight drop in power on my more powerful backhands. I figured out that I was gripping the racquet much tighter than I was before I started working out more seriously. Chins and dips are the staples of my upper body routine, and both require a firm gripping of the handles, rings, or bar. My body was starting to get into the habit of increasing its grip tension when exerting force. To combat it I decided to grip the racquet looser than normal, and presto, the power was back again. It only took an hour to work out the bugs so it wasn't so bad. The real problem is my toss. My tossing arm is also feeling much tighter than it did before, and every toss is now feeling a little too tense. I have always had a shaky toss, and this must have exposed it even worse. This one is going to take a while to work out. Stretching is really not the problem, because I perform a thorough upper body stretching routine daily. I am actually more flexible now than before. If anyone tries to add strength training to their routine they better keep close tabs on their game, because it really stinks when you have to retrain something you already had down cold. However, I do feel like I have more control on my forehand, and it seems easier to stick the volleys as well. I will report any other positives or negatives I notice in the future.