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Psoas Muscle - Why It's the Most Vital Muscle In Your Body

The psoas muscle may be the most important muscle in your body. Read on to find out whether you might have a psoas muscle imbalance, and how to correct it.

Hot for Teacher: The Trainers to Watch in 2014

Nothing is more inspiring than an exercise instructor who has the body you want, but there's more to these fitness experts than meets the eye.