Modern people have a fast pace of life, stay up late more, exercise less, and like cold drinks and air conditioners in summer, which will damage the yang, leading to frequent allergies and autoimmune diseases. "The Yellow Emperor's Internal Classic Su Wen" said: "Righteousness is included, and evil cannot be done. If evil is combined, its qi will be weak. " Most human diseases are caused by the decline of human immunity, and human immunity is the ability to resist external evils, which is closely related to the yang in the body. "yang, defending the exterior, is also solid", which means that the yang of the human body can resist exterior evil.

There is plenty of sunshine in summer, so sunbathing is a very good way to keep fit and prevent diseases. Regular sun exposure can replenish yang, enhance human immune function, increase phagocytic activity and reduce inflammation; Promote human blood circulation and make blood vessels healthier; Promote bone health; Enhance the body's metabolic capacity; Adjust the central nervous system, etc.

Get more sunshine in summer and pay attention to methods.

Time: Choose the right time to bask in the sun. You can bask in the sun in spring, summer, autumn and winter, but the wrong time will be harmful to your health. Especially in summer, choosing the wrong time is easy to get heatstroke and so on. It is best to sunbathe at 9 ~ 10 in the morning and 4 ~ 5 in the afternoon in summer, because the characteristic of sunbathing at this time is that there are many components in a bunch of ultraviolet rays, which is a good time to reserve vitamin D, a "sunshine vitamin" in the body. It is advisable to stay in the sun for about half an hour every day.

Location: head, back, limbs, hands and feet.

Clothing: it is best not to wear black clothes when basking in the sun; Pay attention to take off your hat and gloves, expose your skin as much as possible, and let the sun get in close contact with your skin. Sunbathing through the glass window is not effective, and it is best to be outdoors or on a spacious balcony. People who have actinic skin diseases or are allergic to light should not bask in the sun. In particular, it should be noted that excessive exposure can easily turn human moles into melanoma or skin cancer. When you are in the sun, you must wear a sunscreen to cover the mole. (Liao Huili)