25 Dec '14, 7am

The BEST advice from the gurus of running:

For years, Metzl ached as much as his patients: His knee (reconstructed after he tore his ACL) and hamstrings regularly complained about his running habit. "But I noticed that when I did lots of squats, they felt better," says Metzl, an author, marathoner, and sports-medicine specialist who saw that even his strongest clients suffered from WBS (weak butt syndrome). Weak glutes not only make runners more injury-prone–they also hamper performance. "You can have great quads, but the butt is the engine," says Metzl, who helps runners cure their WBS with IronStrength classes in New York City every other week.

Full article: http://www.runnersworld.com/advice/winning-one-liners?adb...

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