There is a saying that goes like this: I have observed my peers, especially boys, and their decadence begins with alienation from sports. Especially after graduation, they are busy with work, socializing, and eating without moderation. After three or five years, the handsome boys of the past have become bloated with fat on their faces. It's really terrible. Haruki Murakami said that the body is the temple of man. No matter what is enshrined in it, it should be kept strong, beautiful, and clean.