In cold winter, sauna and hot spring are very popular relaxation activities. The high temperature environment promotes human blood circulation and accelerates metabolism in the body. However, you know, while you are enjoying, [balls] are suffering. Human reproductive capacity is gradually deteriorating In recent decades, the quality of human semen has obviously declined. According to the World Health Organization (WHO) recommendation, couples who live together for more than one year without contraceptive measures and whose women are infertile due to male reasons are called male infertility. About 5% ~ 8% of couples of childbearing age in developed countries in the world have infertility problems, while in China this figure is about 10% ~ 15%, of which male factors account for Read More …