Dr. Layne Norton

there was a study like a, I think it was a meta analysis looking at rounded back deadlifting versus straight back deadlifting or degrees of flexion in the disc.

And I mean, everybody would think, okay, round back deadlifting, it raises your risk of injury.

And it didn't really.

Um, and you see some top power lifters deadlift with a round back, mostly rounded in the upper back.

Um,

And so you go, how is that possible?

And then even like knee cave, knee valgus on a squat, right?

That's where your knees come in.

One of my friends is probably the best female squatter in the world, drug-free.

She's squatted 496 pounds at 150 pounds body weight.

Her name is Leah Bovois.

She's a French national champion.

But her knees cave when she squats.

But she's always done it that way, which means she started out doing it that way when the load was light.

Her tissues adapted to that.

And it's not really a risk injury risk for her.

And actually, I used to deadlift with a straight back and found that when I was fatigued.

My back would start to round and that's when I would get injured and have pain.

And about five years ago, I changed.

I said, okay, let's try this whole tissue adaptation thing and just pull the way I pull when I'm fatigued.