Two woman doing leg exercises on pilates reformer machines. Rear angle view with legs straight up. Click below for more in this series plus my other working out and staying fit images: - Eliza Snow/E /Getty Images

Two woman doing leg exercises on pilates reformer machines. Rear angle view with legs straight up. Click below for more in this series plus my other working out and staying fit images: - Eliza Snow/E /Getty Images

Original article and pictures take https://pilates.about.com site