Behaviors2 mentions

Use Additional Head or Neck Cooling if Someone Is Overheating

In addition to glabrous skin cooling, putting cold water on the top of the head and perhaps the neck may also help someone who is overheating.

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“So you can cool the brain, you can have a cooling effect on the brain by pouring water on your head. ... It's one of the natural mechanisms for cooling the brain.”

huberman · Essentials: Increase Strength & Endurance with Cooling Protocols | Dr. Craig Heller · Aug 7, 2025 · 18:39 · open ↗

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