《黄帝内经·素问·调经论》
岐伯说：诸阳之气，均承受于上焦，以温煦皮肤分肉之间，现寒气侵袭于外，使上焦不能宣通，上焦不通则寒气独留于肌表，因而发生恶寒战栗。
岐伯曰：阳受气于上焦，以温皮肤分肉之间。今寒气在外，则上焦不通，上焦不通则寒气独留于外，故寒栗。
Qi Bo said: All Yang Qi is received in the upper energizer to warm the skin and muscles. Now cold Qi invades from the outside and makes the upper energizer unable to circulate. If the upper energizer does not circulate, the cold Qi stays on the skin surface, causing coldness and shivering.