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This point is most noteworthy for its usefulness in stopping pain and for its capacity to cause the large intestine to contract, which can assist in moving bowels.
Actions
Expels exterior Wind and releases the Exterior.
Promotes diffusion of Lung Qu.
Regulates Wei qi and sweating.
Stops Pain.
Clears obstructions from LI channel.
References
Wang, Wei; Liu, Ling; Zhi, Xin; Huang, Jin-bai; Liu, Ding-xi; Wang, Hua; Kong, Xiang-quan; Xu, Hai-bo (March 2007). "Study on the regulatory effect of electro-acupuncture on Hegu point (LI4) in cerebral response with functional magnetic resonance imaging". Chinese Journal of Integrative Medicine. Vol. 13. pp. 10–16. doi:10.1007/s11655-007-0010-3.