Hip Flexor Strengthening Exercises for Sprint and Jump Performance STACK

Hip Flexor Strengthening Exercises for Sprint and Jump Performance STACK STACK Expert Tammy Kovaluk offers 3exercises to strengthen your hip flexors, which are critical for sprinting and jumping.

Original article and pictures take http://www.stack.com/2015/08/18/hip-flexor-strengthening-exercises-for-sprint-and-jump-performance/ site