research, you must be talking about me, I do the same thing.. LOL

I started playing the tennis today for an hour...OMG I was sweating like crazy. Jonathon had suggested to use your legs as you would if you were really playing tennis - kinda a squat position as you wait for the ball. This really helped to give me more of a work out. I also have done the boxing and I was really sore the next day. This has been the best way to work out I have found! I am so competitive that I find I work out harder trying to beat that gosh darn computer...lol... I am sure I will be sore tomorrow from the tennis...I will keep you posted...