associated with sleep.
That doesn’t mean hotter is better.
Extremely hot water can be uncomfortable and may irritate or dry the skin.
A comfortably warm shower is enough.
What About Cold Showers?
Cold showers have become popular online, and some people find them refreshing.
But if your primary goal is preparing for sleep, current research is more supportive of warm rather than cold showers. Sleep Foundation similarly notes that the evidence for improving sleep is stronger for warm evening showers and baths.
Save the icy shower for when you actually