I'll admit: Sometimes I’m guilty of focusing a bit too much on my core and not enough on my back when exercising. But, just because I can't see what's going on back there, it doesn't mean I've got a free pass to ignore those muscles. In fact, Crunch Gym trainer Allison Berry says it’s just as important to work the flip side of your body — not just for looks, but for better health. One of your best weapons against poor posture is strengthening your back muscles.
This Is The Only Running Playlist You Need This Week