I am an out of shape 34 year old tennis player who desperately needs to improve my conditioning before I find myself unable to get around the court. I have played tennis for over fifteen years and would rate myself somewhere between a 4.5-5.0. I am about 5'9" and I hoover between 220-230 lbs. Is there anyone out there who could offer some specific advice on what types of exercises I could do to shed what is obviously a significant amount of weight? Please feel free to post any responses here.