Therefore, modern people are more and more fond of rejecting the sunshine in summer. What's more, they try their best to avoid and block the sunshine, thinking that this is a scientific method to protect their bodies from harm.
In fact, refusing the sun is not conducive to health. According to Huangdi's Neijing, yang should be raised in spring and summer, and the sun should not be tired in summer, that is, the sun should not be tired. Therefore, more sunshine in summer is the real natural way to keep in good health.
According to the theory of summer health preservation, the small universe of human body corresponds to nature, and summer is the most vigorous season of yang in nature, and it is also an important season to maintain the yang of human body. The sun is the most important energy source for the growth of all things. Through sunbathing, the meridians and acupoints of the human body can feel the natural qi, and the yang in the body will be warmed and germinated. Therefore, the health care recorded in ancient books all emphasize the need to bask in the sun more in summer, encourage yang and promote health.
From the perspective of modern science, sunlight not only contains ultraviolet rays, but also contains many kinds of rays beneficial to human body. Some substances beneficial to life can't be explained by modern science, but sunbathing has become popular in many advanced countries in the world, which is used to strengthen the body and treat some diseases, so sunbathing in summer also has certain scientific reasons.
The key part of sunbathing in summer should be carried out according to the characteristics of human body, with the aim of promoting yang. The back of the human body is where the Du meridian is located, and the Du meridian governs the yang of the human body. Therefore, drying the back in summer has a good effect on maintaining yang and promoting the operation of qi and blood.
The highest point on a person's head is Baihui point, where all meridians of the human body meet, and the head is the first of all yang, so the head is also the key part of sunbathing.
Summer corresponds to the heart of the human body, so summer is the season of nourishing the heart, and the palm is the position of Laogong point of the heart meridian. More sunshine can clear the heart, soothe the nerves and relieve fatigue.