Andrew Huberman· PhD
And unless you are devoted to training through external rotation and exercises that are going to externally rotate the shoulder, you're not training that function.
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The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
And unless you are devoted to training through external rotation and exercises that are going to externally rotate the shoulder, you're not training that function.
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So if the rotator cuff has some ability to counteract the upward pull of a del then it can maintain a more healthy relationship with overhead movement.
The only weapons we have for external rotation are those little rotator cuff muscles and three of them actually three of the four. And the job is to sort of actively and consciously train them through really the boring exercises, right? Like you've seen them with the band, you anchor a band to a pole, you stand with the band in the opposite hand.
The shoulder has the most mobility in the body of any of any joint, but it's also got the least stability, right? There's always that trade-off of mobility and stability. So your stability comes from, you know, certain muscle groups. And one of the ones that the only muscle group that actually externally rotates the shoulder is going to be the rotator cuff. Okay? And unless you are devoted to training through external rotation and exercises that are going to externally rotate the shoulder, you're not training that function.