It's a new year, and we think you should ring in 2012 with some dumbbells! Yes, it's time to start strength training. And to help, we asked FITiST celeb trainer Adam Ernster to teach us a bit about the basics of building muscle. Watch and learn, not only how to safely start a strength training routine, but three moves to incorporate into your sweat session: squats, push-ups, and rows.
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