This article explores the history, benefits, challenges, and alternatives of co-sleeping in Japan. Co-sleeping has been around for centuries in Japan and is becoming increasingly popular among modern day Japanese families due to its convenience and closeness it provides between parent and child. Benefits include bonding during nighttime hours, making it easier for mothers who are breastfeeding their babies at night, reducing stress levels, and helping children develop better sleeping habits overall. Challenges include limited space which can lead to disturbed sleep patterns or arguments over who gets more space on the bed as well as potential adverse effects on a child’s development if done too often. Alternatives to co-sleeping include using bassinets/cribs placed right next to your bed, separate beds placed right next to each other or side by side, or even opposite each other.