Hip Flexor Stretches With a Foam Roller

Hip Flexor Stretches With a Foam Roller. Part of the series: The Body Melt. The hip flexors are a group of muscles deep inside of the thigh that are responsible for flexing you at the waist line and also for bringing your femur bone up inside of the pelvis. Find out about hip flexor stretches that you can do with a foam roller with help from one of the country’s leading fitness experts and celebrity trainers in this free video clip.