Yes. I was a wrestler in high school and college. Strict dieting to get to the next lower weight class was very common. Some of my teammates were literally starving themselves, yet weren't seeing weight loss beyond a certain point, despite daily strenuous exercise. We began to think this was due to a starvation reaction, but there was really no way to know. Ever since those days, and since my siblings are both morbidly obese, I've been interested in diet and nutrition. Now, it's to the point where I grow most of my own food. I could easily be heavy like my brother and sister were it not for my own strict dietary habits in regard to empty sugar calories and daily exercise activity. Thanks for the info!