Essentials: Increase Strength & Endurance with Cooling Protocols | Dr. Craig Heller

About this video

Physiologist Dr. Craig Heller explains how the body loses heat and how cooling can raise exercise capacity. Dr. Heller says a cold shower or bath triggers adrenaline and vasoconstriction, and that the palms, soles, and upper face are primary heat-loss sites because special blood vessels there shunt blood directly from arteries to veins, bypassing capillaries. He explains still water forms an insulating boundary layer, reducing heat transfer. For endurance exercise, Dr. Heller says pre-cooling increases the body’s capacity to absorb heat and delays reaching the sweat point. He advises against gripping handlebars tightly or wearing gloves when trying to lose heat. Comparing cooling methods for hyperthermia, Dr. Heller reports palm, sole, and face cooling cooled people twice as fast as cold packs at the armpits, groin, or neck, and says cooling between sets produces a true conditioning effect that persists.

Key takeaways

• Dr. Heller identifies palms, soles, and upper face as primary heat-loss surfaces.
• Dr. Heller explains specialized vessels shunt blood from arteries to veins, bypassing capillaries.
• Dr. Heller says pre-cooling can extend endurance by increasing heat-storage capacity.
• Dr. Heller reports palm, sole, and face cooling worked twice as fast as packs at armpits, groin, or neck.
• Dr. Heller says performance gains from cooling between sets persist as a conditioning effect.

Episode details: published August 7, 2025 · 64.1K views · 31:21 long. Summary written by Self Growth Videos from the episode itself. The science and protocols described are Andrew Huberman’s, presented for education — not medical advice. Consult a qualified professional before changing your own health practices.

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