Men sleep naked. I think this is normal. Not to mention men, some women like to go barefoot when they sleep alone. Men and women, if you sleep alone. Before you get married, if there is no one else together. Sleep naked. I feel cool in summer because I have no clothes on. It's also very comfortable, unlike getting dressed. Turning it over will also make the clothes a little exciting. This is all a personal habit. In addition, it is normal for boys and boys to sleep shirtless. So there is no need to make a fuss. Good things vary from person to person and are personal hobbies. , not the same. Don't think too much. Everything is normal.