First of all, understand what the crescent moon refers to, which is an arc-shaped white mark on the nail. You will find that many people have crescent moons on their nails, some people have more crescent moons, and some people have fewer crescent moons. In many people's minds, the crescent moon on the nail is related to physical health. It is considered that the more obvious the crescent moon, the better the physical quality, and the less the crescent moon, the weaker the body, which has no scientific basis. Crescent is an important manifestation of nail growth. The reason why there is a white crescent in the nail is because there is a white keratin cell in the nail.
This is also an important substance that constitutes nails. After the cells are produced, they will grow forward and the nails will become whiter. Finally, people's nails will become transparent. There are two reasons for the number of crescent moons on people's fingers. The reason of 1 is the position of methyl group, and the second reason is the metabolic speed of human body. If you look at your fingernails carefully, you will find that everyone's fingernails have a substance called methyl, which grows in different places. Some people grow methyl on the top of their nails. As long as they grow new nails, the crescent moon will become very big.
But some people have methyl groups under their nails, so the crescent moon looks very small. It can also be found that everyone's metabolic rate is different. When people's metabolism is faster, the white keratin cells produced by methyl will grow faster, so there will be more crescent moons. The final conclusion is that the strength of people's physical fitness is not directly related to the crescent moon on their nails.