Squat University on Instagram: "The stretch I'm demonstrating today is one of my favorite hip openers to use prior to squatting. It's a stretch I learned years ago from Kelly Starrett of @thereadystate. Keys for proper execution: keep your trail leg straight & lean from the hips (don't drop your chest as you lean forward). As always, test - retest to see if this mobility exercise is right for you! Sit into a deep squat. Notice how you feel. Then perform this stretch - and immediately sit into yo