Some people sleep, like to sleep on their side, to the left, and the right oppresses the left; Right, left oppresses right. People who sleep on their backs press their forechests on their backs, while people who lie prone put back pressure on their forechests. In any case, oppression and being oppressed are related. Some people say that he sleeps standing up, making the upper body oppress the lower body, and the whole body weight is pressed on the soles of his feet, making the oppressed more painful.

So what is the best sleeping position to choose? It depends on personal circumstances. Scientific research says that people had better sleep on the right side, which may be the best sleeping position for human beings, but the best sleeping position is universal. For example, fat people can only choose a sleeping position that is scientifically considered bad-sleeping on their backs. If the fat man sleeps on his side, the whole weight is on his arm, so he won't sleep for long. The fat man sleeps on his back, his huge body is scattered on his broad back, and the oppression of each part is light. Plus, fat people sleep more dead, so they sleep longer.

Thin people can sleep in any position except the left, because the most important organ of the whole body is on the left, and the most important organ can't be oppressed, especially the bigger and heavier people.

To sum up, as long as gravity exists, the relationship between oppression and oppression will always exist. When oppression always exists, we have to choose a relatively comfortable oppression posture to sleep.

Some people say that sleeping in space is not oppressive. I think it's also true. It's just that people who are used to living in the air, once they drift in space and lose their oppressed bodies, sleep is not practical. At that time, they will definitely think that it is better to sleep in bed if the earth is a little more oppressive.