Is massage 3 12 good for single measurement or double measurement?

Massage 3 12 is double press. 3 12 meridian exercise massage Hegu, Neiguan and Zusanli points is very significant. 3 12 meridian exercise, left and right measurements, and massage of Hegu point have certain effects on the discomfort and diseases of tissues and organs in large intestine circulation, especially on reducing the occurrence of oral diseases and protecting dental health.