Good morning. Happy Monday. I have neuro coffee in hand and it is perfect. All right. A couple of housekeeping items. Those of you on iFast University, we have a call today, 1pm Eastern Standard Time. Please join us for that. If you're not on iFast University, go to ifastuniversity.com. Get yourself signed up and join us for that conference call today at 1pm. This week is the Intensive 17 week. So we're going to get ready to dig into that starting on Thursday. So I might as well announce Intensive 18. That's going to be July 28th through the 31st. So hold those dates. If you're not on the mentorship list, please go to any blog post on billhardmanpt.com. Get yourself signed up so you can be the first to be notified when applications open for the Intensive 18. Remember, only eight people get to come at a time. And so we have to use an application process to do so. Please get signed up. Again, billharmandpt.com. Any blog post at the very end, you can sign up for the mentorship list. Okay, digging into today's Q&A. This is with Alex. Alex asked a great foundational question talking about how the narrow ISAs move their center of gravity through space. And the thing that we want to recognize again about narrows is because of their physical structure, because of their bias towards this ER representation of the pelvis, they're going to move forward on a more vertical helical angle. So that left side is going to come forward to manage some of the internal forces that we're always dealing with. And then they're just going to move towards available space, which is typically that way. And so this discussion with Alex covers how that shape change actually occurs to allow this movement to occur. And so this is a great foundational question. So thank you, Alex, for asking. If you would like to participate in a 15-minute consultation, please go to askbillhartman at gmail.com. Please put 15-minute consultation in the subject line so I don't delete it. Include your question in the email. We'll arrange that at our mutual convenience. Everybody have an outstanding Monday, and I'll see you tomorrow.

So when there are moves, four on the left first, and then they go left to right.

Okay, now I understand.

I was just wondering where in that pathway, they start to get right to your compression. I'm assuming at some point it's there to help them not fall over off their right foot. But I'm not sure on what part it shows up.

As soon as they start moving forward, they're going to start pushing back, right?

Right, I say anterior, and then posterior.

Right, posterior.

Yeah.

Okay, so they go forward on the left, and as they're moving this way to the right, they're also going forward, right? And so as they go forward, they're gonna push back, and so you have, this is happening as they move to the right. You understand that, correct? Like at what point does that happen? As soon as they start moving from left to right. It has to, because the space is going to have to close. Cause if the space was open, they wouldn't have to move any farther. They would already be expanded. They would be taking up that space.

Okay.

It has to, because the space is going to have to close. If the space was open, they wouldn't have to move any farther. They would already be expanded. They would be taking up that space.

Maybe they don't fully understand this.

So can you say that again, but in a different way?

So if they're just forward on the left, just forward on the left, okay? They don't have the anterior, posterior compressive strategy on the right side. Okay, so they still have A to P, right? Which means that they didn't push farther to the right. So if I squeeze you on the left first, okay, that creates expansion relative to the left side, more expansion on the right. But it's A to P expansion on the right side, okay? Not lateral expansion on the right side.

Right.

Okay, so if I squeeze the left side first, that creates a bias of volume to the right. I have AP expansion, but now I have to push. My center of gravity is still going to push forward, which means I'm going to get even more AP expansion on the right side. So I squeeze the left, bias the expansion to the right. Now I'm squeezing A to P on the right. The left is already squeezed, so I can't go back that way. As I squeeze A to P, it's going to move from left to right across the pelvis, and it's going to move me to the right. Take a water balloon, look down upon it from the superior view, squeeze the left side, and you will see that it creates a round bulge to the right. Hold onto that squeeze and then gradually squeeze across the balloon, and the bulge of the balloon stays to the right, and that's the direction that I will move. That's what's happening.

Okay. That makes sense. So something else that I see I feel like a lot of times is with narrow, they'll go forward and they'll get like a compensatory rotation from right to left. I don't know. So, I feel like a lot of times it'll create an IR compensatory force. which involves some series of twists from the right side and going down.

They will, absolutely they will.

which involves some series of twists from the right side and going down.

Okay. So it's IR going down, right? All right. Where is straight ahead?

In that situation.

Yeah. Is it? I don't know where straight ahead is sometimes. Okay. So I push you forward on the left. And then I start to push you forward on the right. It may look like you're turning left because you're compressing that side relative to some imaginary starting point. You're not really twisting back to the left. You're just going forward as they go forward and to the right, predominantly to the right. Right side is pushing forward. Okay. So everything's moving to the same place. So if this side was forward and this side was back initially, and as you go to the left, this side goes forward, it looks like you're turning this way.

Yeah.

And then I start to push you forward on the right. It may look like you're turning left because you're compressing that side relative to some imaginary starting point. You're not really twisting back to the left. You're just going forward as you go forward and to the right, so you're going to the right. The right side is pushing forward. So everything's moving to the same place. So if this side was forward and this side was back initially, and as you go to the left, this side goes forward. It looks like you're turning this way.

Yeah.

So you need a point of reference.

Yeah.

You see what I'm getting at? It's not. They're not doing this. The other side's just sort of catching up to the initial position relative to where it started.

So in that situation, if you have enough of that compensatory IR4 production on the right side, does it create issues when you try and go right to left? They'll just sink straight into that compensatory strategy and then we'll get the proper turn.

Okay, so this is where the cues come into play to make sure that you go in the appropriate direction. This is why we talk about the foot cues so much when you're using like a grounded representation where the foot's on the ground and supported somewhere as a representation of the ground. This is why the cues become so important is to make sure that you do go in the appropriate direction. So if I want to go right to left in a narrow ISA, the medial foot cues become essential because it will assure me that I'm going right to left. If I didn't capture a heel, you're going forward because you're still in a late representation.