Overview
- A 2019 systematic review of 17 studies found that warm bathing around 40–42°C taken 1–2 hours before bedtime shortens sleep latency and improves sleep efficiency and depth.
- Cardiologist Aurelio Rojas promoted the routine on Instagram this week, and Spanish and Latin American outlets amplified his remarks while noting that claims about longevity are indirect and tied to better sleep.
- Coverage reiterates practical guidance such as allowing body temperature to cool after bathing, keeping the bedroom cool, and reducing bright light exposure before bed.
- Psychologists describe the nighttime shower as a closing ritual that supports emotional decompression, organization, work–life separation, and in some cases sparks creative thinking.
- Reports caution that evidence is strongest in healthy adults and that very hot or last‑minute showers may hinder sleep for some people, underscoring individual tolerance and the need for more research in vulnerable groups.