Where to apply the "Sanfu Patch" for cold feet

For cold feet, Sanfu patches can be applied to acupoints such as Dazhui (GV14), Shenshu (BL23), Guanyuan (CV4), and Shenque (CV8). Sanfu patch therapy is a traditional Chinese external treatment based on the principle of treating winter diseases in summer. It is usually performed during the "Sanfu" period (Dog Days), which is the hottest time of the year when yang energy in the body is at its peak. Applying the patches at this time can stimulate the body's yang energy, help eliminate internal coldness by reinforcing yang, and thereby relieve physical discomfort.