Generally speaking, can be in the three ambient days, but specific should be based on the cause of the disease and personal physical conditions to choose.
Chinese medicine believes that the abdomen for the yin, back for the yang, the back of the ducal vein for the “sea of yang veins”, leading the whole body of the yang meridian, but also the main body of the yang qi.
And the use of “winter sickness, summer cure” principle, in the three days of the year when the most vigorous Yang Qi, appropriate sun back can be through the Xuanfu gateway, unimpeded gas, blood, fluid operation, supplementation of Yang Qi.
However, the above only applies to a variety of cold diseases and cold body patients, if the three ambient days improper sun back instead may lead to heat stroke, pyrexia and other serious consequences, so the three ambient days can also choose the three ambient paste, three ambient moxibustion and so on.
Sanvodian sun back need to choose the right time under the guidance of a doctor, do not blindly try on your own.