One of the most common mistakes in this movement is squatting-some fitness enthusiasts even squat down to the thigh, which is easy to get hurt under heavy load: when the thigh and the thigh are at an acute angle, the cruciate ligament of the knee joint will bear great tension, and the stress on the bone will be seriously uneven, which will lead to injuries such as knee ligament strain, tendon strain and periosteum wear; At the same time, squatting too deep will lead to the upper body leaning forward, and the lower waist can not be kept straight, which will cause harm to patients such as lumbar vertebrae, disc herniation and lumbar muscle strain.

I am a professional. )