I'm pre-op and have started exercising. Though it's hard to heft around these extra pounds, I still enjoy it. What works best for me is exercising in the water. Nothing hurts too badly and I have a great time bouncing around. I've found water aerobics and other water fitness classes to be the best. I'm hoping that pre-weight loss toning will help as I loose the pounds. I know I certainly feel stronger in terms of breathing and overall health going in to surgery. I'm really excited to gain stamina, agility, and strength as I loose the weight because -- shockingly -- I'm enjoying the gym!