There is a quick test you can do right now to help gauge your overall performance: bring your knees to your chest by jumping WITHOUT rounding your back.
Did you give it a try? Don’t feel bad if you weren’t successful, because, surprisingly, a lot of guys cant.
This is the result of a weak muscle called the psoas, which is the muscle that connects the top of your thigh to your lower back.
Why is this a problem? Weak psoas limits how deep you are able to lunge and squat and also messes with running technique. Ultimately, a weak psoas hinders overall athletic performance.
Having strong psoas muscles will “unlock your performance, improve your range of motion, and make you a beast.”
Luckily, there are some exercises you can do at home to help strengthen those weak psoas: seated high hip flexors, standing step-ups, and reverse lunges. For maximum effectiveness, perform 5-10 reps on each side. These drills can be done as a warm-up or added to your existing circuit drills.
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