Stretch or shrink the yong should ride seat, hips and feet angle is 90% only. Should not sit closer to the hip heels because it makes knee cartilage or ligaments are stretched, too. Which is why one makes the knee pain.
The squat stretch or shrink the hips and feet should sit at 90%, should not only take aligned heel to hip, because the ligaments or cartilage in the knee stretch too. The cause hurt him.
The young, or short stretch should sit over the hip and foot angle 90%. Should not sit close to the heel hip because it gives a ligament or cartilage knee stretch too. The cause of knee pain.