There are some pimples on my ass on a hot day. What's that? How to get rid of it?

Try to penetrate air-tight pants or cotton, and don't sit for too long. If you sit for too long, don't sit on soft sofas, like it's very hot recently, but if you do these things for a long time, it means that your body is very wet. You should pay attention to eating some damp-removing foods, such as red dates and barley.