The illiacus attaches on the upper portion of the femur and begins on the inside crest of the illium (inside of the pelvis), where the psoas attaches all the way through the transverse processes of the lumbar spine, even binding into the discs directly. The rectus femoris begins at the base of the anterior superior illiac spine, and attaches all the way down to the knee cap, whereas the sartorius starts in the same place as the rectus femoris, but attaches on the medial aspect of the knee, blending with the MCL and portions of the hamstrings.
Imagine not being able to climb stairs, bend over, or even walk Changes in hip joint muscle-tendon lengths with mode of locomotion. Riley, P.O., Franz, J., Dicharry, J., et al. Center for Applied Biomechanics, University of Virginia, Charlottesville, VA. Gait & Posture, 2010 Feb; 31 (2): 279-83.. All pretty essential if you ask us! But that’s what our bodies would be like without our hip flexor muscles. Never heard of ‘em? It’s about time we share why they’re so important, how your desk job might be making them weaker (ah!), and the best ways to stretch them out.

The good news is that there are plenty of good hip stretches out there that you can do to relieve discomfort, decrease tightness, and increase mobility in your hips. Since your hips are involved in so many of the movements you make (both inside and outside of the gym) stretching them is a great way to keep them feeling good and ready to work for you. Add some of the 12 hip stretches Atkins demos below to the end of your workout, or spend 10 minutes each day just doing a few of them, to improve mobility in your hips.
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