Former Olympic swimmer Susie Thayer used to train like crazy for speed. "When I would swim six miles a day, I would go home and do 500 sit ups and 300 push ups. I had my own self-weight lifting system."
Now the 45 year old water irrigation specialist does Pilates, and wished she had known about it when she was competing. "It works on your core,... If I would have had Pilates, I would have been just that much faster."
It's true; working from the center core muscles helps you move more efficiently and with less fatigue, making you stronger and faster.