Healthline: Research shows that warm showers before bed can help people get better sleep.
A 2019 systematic review found that taking a warm shower or bath (104 to 108°F, or 40 to 42°C) for at least 10 minutes 1 to 2 hours before bedtime improved the participants’ sleep quality more than those who didn’t take one.
A 2019 study found that soaking in a warm bath for 11 to 15 minutes before going to sleep helped older participants lower their blood pressure before bed. Some participants’ blood pressures dipped as much as 16 mm Hg after a warm bath.
