Bathing evidence has a specific scope
A 1999 home study followed 30 younger and 30 older people. After bathing, the older participants more often reported better sleep or quicker sleep onset; both groups moved less during the first three hours of sleep.
That small study involved baths and particular home conditions. It does not establish the effect of NUSBE equipment, a local heat pad or a wellness appointment at another time of day.
Build a routine you can repeat
Choose a quiet wind-down activity such as reading or a comfortable bath. Keep sleep and wake times consistent and the bedroom cool, dark and quiet. Avoid making heat another performance target.
If sleep remains difficult
Keep a brief diary of bedtime, waking and daytime tiredness, then discuss ongoing problems with a clinician. The NHLBI guidance identifies cognitive behavioural therapy for insomnia, or CBT-I, as a usual first treatment for long-term insomnia.