This article explores the traditional Japanese meal structure, which traditionally consists of three meals per day: breakfast, lunch, and dinner. It also examines the reasons why some people in Japan may choose to eat only one meal a day, as well as the potential health risks associated with this practice. Additionally, it discusses potential benefits of eating one meal per day in Japan, such as cost savings and convenience. Ultimately, it is important for individuals considering this option to be aware of potential health risks before making any drastic changes to their current eating habits/routine(s).