Forget About Crunches. Here’s How to Protect Your Back. – New York Times

Forget About Crunches. Here's How to Protect Your Back.
New York Times
The Pilates plank exercise, which looks like the “up” part of a push-up, is excellent if you can do it. Lie face down, and raise your body into a benchlike posture, supporting it with your hands and toes and keeping your back flat. …

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