Uh, we have a simple test in the last book called the sit and rise test, which everyone has heard of now. Just lower yourself to the ground, criss-cross applesauce, right, without falling, and then without putting your knee down or hand down, pop back up. And so what's nice about that is that that's not even a full range of motion test. It's not even uh doesn't require that much strength, but it's a good indicator that you may be missing some hip flexion.