Very frustrating for beginners: the adductor muscles tug on sitting bones, just like the hamstrings do, which causes the top of hips to tilt backward.

• 初学者会有挫败感: 内收肌牵拉坐骨； 就像腿后侧跟腱拉伸一样； 这会导致骨盆后倾.；坚持是需要的!