Japan's Neolithic Age to the 2nd century BC is known as the age of rope culture in archaeology. Stone tools and bone tools were used for hunting and fishing, and female clay dolls were unearthed in vertical caves.
Wash your hands frequently: Japanese people like cleaning, starting with washing their hands. Wash your hands before and after meals, and wash your hands after going home. These are all habits developed since childhood. Japan's tap water has a high cleanliness standard, so you don't have to worry about virus or bacterial infection when drinking raw water.
Brush your teeth frequently: Japanese love their teeth and have the habit of brushing their teeth after meals. Many Japanese people have to keep a set of dental instruments in the office. There are also many Japanese who rinse their mouths and brush their teeth as soon as they finish eating. Brushing your teeth after meals to remove food residue from your teeth is very beneficial to protect your teeth.
Take a bath often: Japanese people like to take a bath at least once a day, usually before going to bed, which helps them sleep well at night. Some people even take a bath after getting up in the morning, even women with long hair, so that they can stay refreshed when they go out in the morning. The Japanese are also famous for soaking in hot springs. Before going to the hot springs, everyone will consciously wash their bodies in the shower, and then go to the hot springs.
Change clothes frequently: Japanese office workers, especially women, have to change their underwear and coats every day, otherwise they will be suspected of not going home for the night.
References:
Baidu Encyclopedia-Japanese