34℃ ~ 36℃ is a mild bath, which has an inhibitory effect on the central nervous system and can calm the mood;

37℃ ~ 38℃ is a warm bath, which can relieve vasospasm, promote blood circulation and eliminate skin tension;

39℃ ~ 42℃ is a high temperature bath, which can improve blood circulation and metabolism.

The time for each hot spring bath should be 10 ~ 20 minutes. If you take a warm bath at 34℃ ~ 36℃, the time can be a little longer, and the high temperature bath should never be too long.