Most pillow lifts do not Angle under the knees to form a knee-break, therefore you'll sit with your legs extended.

最不枕升降机角膝盖下，形成一个膝盖休息，因此，你会坐在你的腿延长。

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When if the habit is admired, sleeping, can curve knee or the pillow is placed below knee, with pulling force of slow down sarcous.

如果习惯仰睡时，可将膝盖弯曲或在膝盖下放置枕头，以减缓肌肉的拉力。

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