Here is my story. Played 4 hours a day 6 days a week during high school Played 2-3 hours a day 5 days a week during college Gained 89 lbs, developed gout(improperly diagnosed), quit tennis for 13 years Starting getting back into decent shape 3 years ago, and lost 55 lbs. Hurt my ankle this last march and was out of tennis for 7 months to recover. Out of everything physical, gained 30 lbs back. Present day. I have lost 15 of the 30(over two months) I gained by eating much better and swimming(25 of breath stroke, 25 of freestyle to simulate sprinting and recovery) 1 hour a day 5 days a week and lifting weights 3 times a week. My problem that I have faced even when I lost the initial 55 lbs is that I am always so short of breath. 10-15 minutes of intense warm-up and I am breathing hard, my shirt is soaked to my shorts. I have also noticed that the one or two times that I've tried some road work that I can barely last 3/4 of a mile before I am gasping for breath. Even when I was in high school I remember I was always a heavy sweater/breather. So my question is. Am I just genetically unlucky to have low lung capacity or something or should I just keep losing weight and see what happens when I reach my goal weight? thanks!