Next slow crouching, become parallel angle almost till ham and floor (knee can bend ahead but cannot cross sufficient needle) , maintain this pose two seconds, power of station standing position regains later.

• 缓慢下蹲，直到大腿与地板几乎成平行角度（膝盖可向前弯曲但不能越过足尖），保持这个姿势两秒钟，之后恢复到站立姿势。