Autonomic nervous function can be adjusted not only by exercise but also by bathing and sleeping.
In particular, relaxing and improving parasympathetic function is helpful not only for health but also for athlete performance.
It is recommended by professional golfers that it is very popular and the effect is surely seen. HOTTAB myself I use it every day.
I used all kinds of bathing agents, but I felt this was the only thing I could do.
Theoretically, you can be convinced that the level of autonomic nerves is improved.
Improvements have been confirmed when tired, cold, and swollen.
It is also attractive that dirt that cannot be removed with soap or shampoo can be easily removed.