Jeff Cavaliere

We need the ability to have enough external rotation strength to hold that position for longer or to be able to control, right?

The eccentric control from the external rotators is what actually controls the internal rotation.

The eccentric control from the internal rotators.

From the external rotators.

From the external rotators is what controls internal rotation because as we're lengthening the external rotators, we're controlling, if we have good control, the eccentric control of that, then we're slowing down the internal rotation or at least controlling it at a certain pace.

That's extremely important when it comes to pitching.

We have...

this rapid internal rotation going on is that... Essentially, the thumb is moving toward the midline.

So if the external rotators are eccentrically strong, they can control that and control the pace of that and make sure that it's not outpacing what your shoulder itself can structurally protect.

So it's important to have that too.

But...

Internal rotation in the world of the non-athlete is particularly problematic if, A, you're posturally holding that position for way too long throughout the day, which is what we all chronically are suffering from, whether we're texting, typing, not focusing ever on the external rotators of our body.

in our training, you're just getting chronically tight and internally rotated.

And then when you go to do even basic things like lift your arm up over your head, you're creating an internal shoulder environment that's more prone to

creating less space and inflaming tissues that wind up getting pinched in that position.

Basically, when you're tight internally, you get changes to the shoulder capsule itself, which is all the ligamentous structures that surround it, that make you more internally rotated and tight.

You can't get out of that position.

So now when I go to raise my arm up, there's just less room in here.

For instance, I think we might have done this before you and I, but if I were to have you just lean forward like this or slump your shoulder and then raise your arm as high as you could in front of you, that's as far as you get, right?

And you're limited not because of anything that's necessarily tight right there, but structurally,