This article explores the traditional Japanese sleeping arrangement of co-sleeping, where parents allow their children to sleep in the same bed as them until they reach 8 or 9 years old. It discusses the benefits of this practice, such as fostering a strong bond between parent and child, providing security for both parties, helping keep costs down, and more. Alternatives to co-sleeping are also discussed, such as bunk beds, futons on tatami mats, and separate bedrooms.