I live in a wetland lake. How about negative oxygen ions? O Some people say keeping in good health, some say taking an empty bath, and some say prolonging life.
Because negative ions are known as air longevity elements and air vitamins, the essence of the so-called air bath is air bath. The essence is that the air quality is good and the concentration of negative ions is high, which has a good medical and health care effect on the human body, reaching 654.38+ 10,000 /cc, which will make it possible for many chronic diseases to be cured. But few places can reach this concentration.