The best sleeping position is mainly two aspects: 1, in the flat position, try to choose the flexion of the hip and knee, and the lower limbs are mildly externally rotated state, can be in the knee and thighs behind the soft pillow, so as to effectively maintain the state of flexion of the hip and knee. And clear external rotation of the muscles can be in a relaxed state, and the waist will not appear suspended, so that the waist muscles, ligaments, tendons, fascia and other soft tissues can be in a relaxed state, there will be no strain and inflammation, so it is good for the waist. 2, in the lateral position can be in the bilateral knee joint between the soft pillow, keep the lower limbs in a parallel state, and also to bend the hip Bend the knees. This also allows the muscle tissue of the waist to relax, helping the waist to relieve fatigue and promote the metabolism of inflammation.