Sleeping with socks has different effects on different people. For many people who usually feel that their feet are cold, sleeping with socks will make their feet feel warm at night, comfortable and have a better sleep quality. However, for many people who usually have very hot feet, sleeping with socks will affect their sleep and their feet will sweat, which will have a bad effect. Also, for people who sweat a lot, sleeping with socks can make the feet wet, which can easily cause fungal or bacterial infections and is not recommended. However, if you are used to sleeping with socks, you should try to use five-toe socks, that is, socks with separate toes, which can keep you warm and reduce the chance of fungal infections.