That's the wisdom of longevity.

Kidney is the "innate foundation". Regular massage of points Dantian and Guanyuan under the umbilicus, as well as massage of Mingmen and Yaoyang, will help to tonify the kidney. Foods such as walnuts, medlar, black beans and sesame seeds can also tonify the kidney. Every morning, I have to knock my teeth and swallow my saliva. When urinating, try to touch the ground with your front toes and bite your teeth. Long-term persistence is the way to tonify the kidney.

Second, the wisdom of longevity is these.

The ancients advocated the use of tonic drugs to regulate yin and yang, viscera and qi and blood. There are three principles: one is syndrome differentiation, the other is food supplement first, and the third is the combination of reinforcing and reducing.

Chinese medicine says that medicine and food are homologous, and all foods have the function of conditioning the body. In terms of taste, sour taste nourishes the liver, bitter taste nourishes the heart, sweet taste nourishes the spleen, spicy taste nourishes the lung, and salty taste nourishes the kidney. From the color theory, red tonifies the heart, black tonifies the kidney, yellow tonifies the spleen, green tonifies the liver and white tonifies the lung.