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We’ve been hearing a lot these days about the importance of strengthening the core. For a while, we must admit, we’d nod our heads sagely, having not the foggiest notion as to what exactly the core was. All we knew was, it was like, imperative, or something, to tone it. Wanna learn exactly how to get that elusive core in shape? Go to Selfgrowth.com.
What exercises do you do to build muscle?