<a class="link" rel="nofollow" target="_blank" href="http://www.popsugar.com/fitness/5-Minute-Core-Workout-Runners-37104285"></a><p><i>If you're looking to push your run longer, we partnered with New Balance for this quick core workout that builds essential muscles for a stronger performance.</i></p><br /><p>You only need five minutes for this quick video workout that burns so good once you're done: it's designed for anyone wanting a flat stomach - and strong, sexy back muscles. You'll strengthen all the muscles around your abdominals, obliques, and spine, leaving you feeling balanced the next time you're out for a long run.</p>
