This article discusses the standards for what BMI is considered skinny in Japan, potential health implications of being too thin, Japanese diet and exercise habits to help people achieve a healthy BMI, and social pressure for thinness in Japan. It is important to note that having too low of a BMI can lead to serious health problems such as malnutrition and weakened immune systems. Following basic nutritional guidelines combined with regular physical activity helps individuals achieve their desired level of physical fitness without putting themselves at risk from potential health problems associated with being too thin. Additionally, it is important to take into account any external pressures they may face from society at large when striving towards optimal physical fitness levels.