5 Core Strengthening Exercises for Runners Want to be better, faster, stronger? Ditch the crunches and start doing these core exercises to enhace your balance, form and speed.
Original article and pictures take http://www.newbalance.com/article?id=651&ncr=true%2F&utm_source=pgrPNT&utm_medium=display&utm_campaign=MA&utm_content=ROS&ecid=ds_pgr-PNT_Core6518-_MA&pp=1 site
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