This article examines the history and cultural significance of sleeping on the floor in Japan. It dates back centuries and was originally done as a way to stay cool during hot summer months, but over time it became a more comfortable way to sleep due to its low center of gravity and ability to absorb body heat. Practical benefits include improved posture, reduced snoring, better sleep quality, and economical use of space. There are also spiritual reasons linked with Shintoism that make this practice popular. Different types of bedding are used such as futons, quilts and kakebuton. Tips for sleeping comfortably on the floor are also provided.