The so-called health preservation is to enhance physical fitness, prevent diseases and get sick less through proper exercise and diet conditioning.

Achieve that purpose of strengthening body constitution, health and longevity.

And foot bath health, personal understanding is:

By soaking feet and massaging foot acupoints, the blood circulation of nerves around the feet can be promoted, and the function of activating meridians can be promoted.

It can be used as a means to regulate the body.