‘Ashiyu’ is Japanese another type of public bath. People can have bathing only their feet, therefore you do not need to take your all clothes off and you can access ‘Ashiyu’ in free in majoryty of places.
You can find ‘ahisyu’ at variety of places such as in train station of country side, near Japanese traditional hotel that is called ‘ryokan’ or park.
I can suggest couple of effects of ‘ashiyu’. ‘Ashiyu’ can be warming up your body temperature from feet slowly, that mean you can be warmed up inside body. If you have a bathing, people usually be warmed up just surface of body. That can help blood circulation of body as expanding blood vessels.
It could be a one of reason as a long life of Japanese people…