The main function of cool drinking water in Japan is to promote physical recovery. Specifically, this drink water has a strong antioxidant effect, which can effectively decompose harmful substances in the body, thus promoting the recovery and health of the body.

However, please note that the above information is for reference only, and the specific efficacy and function of Japanese refreshing drinking water may be different due to factors such as brand and personal physique. When choosing this kind of products, it is recommended to consult a professional doctor or nutritionist first to ensure that it meets personal needs and health conditions.