Squat myths Nicole Andrews Are deep squats bad for your knees?This is a very common myth due to Dr. Klein stating that squats would put too much pressure on the ligaments in the knee. No matter how many scientists tried to dispute this successfully, it is very engrained in our society that squats are bad for us. With current testing though, we now know that the ligaments in our knees have very little stress on then at the bottom of the deep squat. The only time the squat puts damage on the knee would be during the first four inches of the squat because more force is put on the ACL. When at 90 degrees of the squat, the PCL sustains max force but never experiences excessive stress. Once the squat becomes deeper though, the force on the ligament decreases and only puts 25% of its ultimate strength on the tendon. So, the deeper the squat, the safer the squat. This myth also makes people think that squats increase the risk of arthritis in our knees. However, when testing the strength of knees of powerlifters after once session vs basketball players after an hour of practice; the powerlifter’s knees were more stable. This means that there is no cause and effect for squats leading to arthritis. The ligaments are never damaged if done correctly and there is little cartilage wear on the knees. Meaning that only age or poor squatting position leads to poor and damaged knees.