The below tips are courtesy of the Kurokawa Hot Springs Tourist Inn Cooperative Association:
BEFORE BATHING: Before getting in the bath be sure to splash plenty of hot water on yourself. Avoid bathing direcly before and after meals and after drinking alcohol.
AFTER BATH: If you rinse off your body with water after bathing, some of the beneficial effects of the hot springs might be lost. It would be better to pat yourself with a towel to dry rather than rubbing. After bathing relax your body for 30 to 60 minutes.
TIME AND TEMPERATURE: At first get in a cooler part of the bath for 5 minutes, and then sit out of the water for a while. Adjust your bathing time.
FOR BACKACHE AND STIFF SHOULDER: Hold the edge of tha bath and stretch yourself for about 5 times. Then get out of the bath. Repeat 2 cycles of this.
FREQUENCY: First day bathe once, then twice a day for several days, and after that 3 times a day. If you exceed this you may suffer from Yuzukare (ill feeling from overbathing)
Autonomic Ataxia (imbalance): Soak in water at a temperature of 42 C for about 5 minutes and then soak your feet in cool water for 3 minutes.
STIFF SHOULDER AND NECK: Move your sholders and neck slowly under the falling water (Takiyu) for 5-10 minutes.
EFFECTIVE WAY OF BATHING: 5 minute soaks in 42 C water are recommended for people with diabetes, obesity or gout.
BEFORE BATHING: Before getting in the bath be sure to splash plenty of hot water on yourself. Avoid bathing direcly before and after meals and after drinking alcohol.
AFTER BATH: If you rinse off your body with water after bathing, some of the beneficial effects of the hot springs might be lost. It would be better to pat yourself with a towel to dry rather than rubbing. After bathing relax your body for 30 to 60 minutes.
TIME AND TEMPERATURE: At first get in a cooler part of the bath for 5 minutes, and then sit out of the water for a while. Adjust your bathing time.
FOR BACKACHE AND STIFF SHOULDER: Hold the edge of tha bath and stretch yourself for about 5 times. Then get out of the bath. Repeat 2 cycles of this. 
FREQUENCY: First day bathe once, then twice a day for several days, and after that 3 times a day. If you exceed this you may suffer from Yuzukare (ill feeling from overbathing)
Autonomic Ataxia (imbalance): Soak in water at a temperature of 42 C for about 5 minutes and then soak your feet in cool water for 3 minutes. 
STIFF SHOULDER AND NECK: Move your sholders and neck slowly under the falling water (Takiyu) for 5-10 minutes.
EFFECTIVE WAY OF BATHING: 5 minute soaks in 42 C water are recommended for people with diabetes, obesity or gout.