Dr. Mark Harper recalls his first cold-water swim in the south of England 20 years ago. It was August, but the initial jolt from the plunge took his breath away. The shock to his system lasted a ...

FILE - Revelers enter the cold water during the annual Polar Bear Plunge on New Year's Day, Jan. 1, 2025, in New York. (AP Photo/Andres Kudacki, file) (Andres Kudacki ...

Dr. Mark Harper recalls his first cold-water swim in the south of England 20 years ago. It was August, but the initial jolt from the plunge took his breath away. The shock to his system lasted a ...

Having been challenged to perform the "Cold Water Challenge", this girl calls out all of the people she expects to perform the challenge before performing the challenge herself. She gets paddled out ...