Some folks would argue that if you're in reasonably good physical condition, you're not going to see big results from any exercise program. The contention is th

Some folks would argue that if you're in reasonably good physical condition, you're not going to see big results from any exercise program. The contention is that diet controls much of your body composition and all those other effects people are talking about. I don't know if I agree, but it's an interesting idea; the remaining hunter-gatherers in east Africa don't expend more calories than us even though they do a lot more physical activity every day. My own experience is that once I got used to biking 50 miles a week it had no effect on my body shape or composition. However, once I stopped eating a few things that continually gave me sinus problems I didn't even realize I had, I did feel less depressed :)