Why did you get a back massage and get up the next day and feel sore all over?
Massage casually is not good for your health. Qi and blood flow directionally along meridians. For example, ren meridian is top-down, Du meridian is bottom-up, Yang descends and Yin rises, and massage tonifies and purges. In fact, it is to remove, and the deficiency is to make up. If you massage your own insufficient acupoints, is it getting more and more virtual? Massage can focus on the dead.