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Is it true that … a cold shower is the best way to cool down on a hot night?

Want to lower your temperature and drift off to sleep quicker? An ice-cold shower might seem the best solution, but the truth is more complicated

It’s another sticky summer evening. You’re too hot to sleep. Surely an ice-cold shower is the best way to cool off and drift away quicker? Not really, says Mike Tipton, a professor of human and applied physiology at the University of Portsmouth.

“If you’re trying to go to sleep, the last thing you want to do is go into a freezing cold shower,” he says. The shock of cold water immersion causes the body to produce adrenaline and cortisol, stress hormones designed to keep us alert. “That’s just about the last thing you want before you go to bed.”

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Aug 3, 2026 Life and style Health & wellbeing

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