Summary
Cooling your palms between sets can double or triple your workout volume - but ice on the neck does almost nothing for core temperature. The palms, soles, and face contain specialized blood vessels (AVAs) that rapidly dump heat when cooled at the right temperature (50-60°F, not ice cold). Strategic palm cooling extends time to fatigue in both strength and endurance work.
Key Points
- The palms, soles, and upper face contain specialized blood vessels that efficiently release body heat when cooled, unlike general body cooling
- Placing ice on the neck doesn't substantially reduce core temperature due to the body's natural vasoconstriction response and insulating layers
- Cooling the palms during high-intensity anaerobic exercise extends performance capacity before fatigue sets in
- Strategic palm cooling in hot environments significantly improves aerobic exercise performance and stamina
- Post-exercise cooling with appropriate temperature control (avoiding extreme cold) optimizes recovery between intense efforts
- Tools like CoolMitt provide practical methods for applying targeted cooling without extreme ice temperatures that may be counterproductive
- Loosening grip tension correlates with improved performance, suggesting cooling affects neuromuscular control and fatigue resistance
Key Moments
Ice baths give you adrenaline but not performance gains -- palmar cooling is different
Cold showers/ice baths trigger adrenaline but don't enhance physical performance.
"Could you just tell me a little bit about what happens when I get into a cold shower or an ice bath? Well, first of all, you get a tremendous shot of adrenaline."
Glabrous skin heat portals: palms, soles, and face have unique blood vessel shunts
Hairless "glabrous" skin on palms, soles, and face contains arteriovenous anastomoses (AVAs) that shunt blood directly from arteries to veins.
"Where the portals are are in the glabrous skin. Glabrous just means no hair."
