08/11/2014 12:04 pm ET Updated Aug 11, 2014

11 Things You Should Never Do Again After 50

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Author Jacquelyn Mitchard considers her limits after a half-century of experiences.

According to Webster’s, the sport involves “traversing environmental obstacles by running, climbing or leaping rapidly and efficiently.” Still game? Then consider this: You may have to swing, vault, roll and walk on your hands and feet. You can watch this on YouTube without hurting yourself.

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