I recently had foot surgery to repare a stubborn stress fracture that wouldnt get better... so I had to find something to keep me sane and quasi in shape. I started doing different Pilates videos at home (Windsor is by far my favorite... also the 'Cruch' series has a pretty intense mat workout) and I found that I got pretty lean pretty quick. My bulky leg muscles lengthened out, and when I got back on my bike, I actually felt stronger. I HIGHLY suggest it...