Do you know how to sunbathe?

I have always advocated improving the overall quality of life through running. The good news is that many measures can kill two birds with one stone. For example, we can "run appropriately in the sun" and reap the benefits of "running" on the one hand and "sunbathing" on the other.

1. Promote the body's synthesis of vitamin D. Vitamin D is mainly synthesized by the skin under sunlight. In addition to the well-known function of "strengthening muscles and bones", it also has a regulatory effect on other systems (nervous system, etc.).

2. Regulate the secretion of melatonin and maintain a good sleep. Sunbathing can help our body maintain a better "sense of day and night rhythm", making us energetic during the day and easy to fall asleep at night.

3. Promote the body to secrete hormones such as serotonin, regulate emotions, and prevent depression. We all know that most people in tropical regions have cheerful personalities, while in areas such as Nordic countries where there is a lack of sufficient sunlight for a long time, the probability of depression is very high.

So, how do you get some sun?

1. The time cannot be too long, otherwise the dermatologist will not agree. It is generally recommended to be about 15-20 minutes.

2. The best time period is generally considered to be before 10:00 p.m. or after 4:00 p.m., of course it also depends on the different seasons. One criterion is to look at the shadow on the ground. It is generally believed that the length of the shadow is about 1 to 2 times the height, so it is best to bask in the sun.

3. In theory, applying sunscreen will affect the absorption of vitamin D, but actual research data shows that applying sunscreen will not cause this. The reason may be that in real life it is impossible for "sunscreen to cover all exposed skin and also meet the corresponding thickness requirements."

4. If you sunbathe through glass, the effect will be compromised.

To sum up, the energy for all things on Earth comes from the sun. As a member of the Earth, we need to bask in the sun to keep ourselves "full of energy every day."