As written on the Everyday Health page, Tuesday (13/1), a review of 17 articles showed that sleep quality can be improved by bathing in warm water at a temperature of 104 to 108.5 degrees Fahrenheit (around 40 degrees Celsius) which is done about one to two hours before bed for at least 10 minutes.
This is likely because taking a warm bath before bed causes a decrease in core body temperature which can trigger drowsiness.
While one of the latest tricks circulating on social media involves showering in the dark or dimly lit rooms, this review only addresses showering in general. However, researchers say that some of the sleep-promoting benefits may also apply to showering in the dark.
"Showering in the dark isn't magic, but it can be a helpful signal to the brain that the day is about to end. The most important part is the transition: slowing down, dimming the environment, and allowing the body to transition to rest," said the review's lead author, Shahab Haghayegh, PhD, an instructor of anesthesia in the division of sleep medicine at Harvard Medical School in Boston.
