This article explores the various ways in which Japanese people maintain a healthy weight and avoid gaining weight, such as having a balanced diet low in fat and calories, participating in sports and martial arts, managing stress levels through activities like meditation, getting 7-8 hours of sleep per night, following traditional Japanese food culture with fresh ingredients prepared simply without too much added fat or sugar, having social support from family and friends, and using technology to help manage their diets. These tips can be followed by anyone to stay slim just like many Japanese people do.