Your body's first reaction to a plunge in chilly water is the "cold shock" response. Your heart rate jumps. Stress hormones spike. You gasp suddenly, and may hyperventilate. Your reward if you stay in ...

The longest open saltwater scuba dive in cold water is 36 hours, 9 minutes and 36 seconds, and was achieved by Mazlum Kibar (Turkey) in Çanakkale, Eceabat, Turkey, on 15 March 2026 The attempt began ...

If you live near a body of water in the northern latitudes, you likely have heard of your local polar bear club — usually made up of a group of hearty swimmers who take part in cold water swimming.

One year ago, Congress defunded public media. Now that we're 100% community funded, please become a sustaining member or increase your existing membership today. Your body's first reaction to a plunge ...

Except for a few studies with cold water swimmers, the relevant studies on metabolism exposed people to cold air for long stretches of time, or had them wear special cooling suits like they do in ...