Uploaded February 2026 | Updated September 2026, 1 week ago

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Social media creators often promote cold-water immersions for various health benefits. But research on the subject suggests the benefits are more mixed.

Discover what some research says about cold-water exposure’s impact on alertness, sleep, and cognitive function.

This is a video from the 2025 Brain Awareness Video Contest.

Created by Satu Astikainen