This article explores the traditional practice of sleeping on the floor in Japan, which has been around for centuries. It discusses the benefits of sleeping on the floor such as increased comfort, improved air circulation, and better posture alignment. It also provides tips for sleeping comfortably on the floor and introduces popular Japanese floor beds such as shikibuton and kakebuton. Lastly, it covers other reasons why many people prefer to sleep on the floor in Japan, such as space-saving and affordability.