Lindsey Vonn Knows – If You Want Strong Arms and Abs, Do This Exercise

Lindsey Vonn is one strong badass on skis, and we know doing pull-ups is one way she stays in Sports Illustrated swimsuit shape. But check out her upper body and core work using a TRX. If you’ve never tried one before, this is one superintense, challenging move called the pike. It’s the instability of the…

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