My classmates say that I often moan when I sleep at night, and I have no feeling at all. What kind of disease is this?

This is normal. Everything happens when a person sleeps at night, such as grinding his teeth, kicking his legs and talking in his sleep. . .

Your moaning should also be one of these, there is nothing to make a fuss about, just don't take it to heart. These are all very common things.

People are different. Some people moan like this. Don't worry about it. The main thing is not to tire yourself too much, and you will get better gradually. It's like snoring. You never know when it will get better.