CoolMitt

07/10/2026

Shervin Shares Shervin Shaikh put CoolMitt through its paces and landed exactly where the research does: muscle overheating is the real ceiling on your performance, not willpower, not conditioning.

Here’s the mechanism he breaks down. When you train, your core temperature climbs. Your body hits a natural circuit breaker and starts shutting down muscle output to protect itself. That’s the wall you feel. CoolMitt cools your core through the palms, one of the few places your body dumps heat fast, so the circuit breaker never trips and you keep working.

It’s DARPA-funded technology out of Stanford, now used across the MLB, NFL, NBA, NHL, and the Tour de France.

Studies show 40 to 60% more work capacity versus non-cooling groups. Some users report breaking three-year plateaus in two months.

07/07/2026

For industrial workers working in the heat, cold towels, ice baths and cooling vests make you feel cooler by cooling skin — and can trap heat in the core. The physiology of why feeling cool isn't being cool.More

Cold towels, ice baths and cooling vests make you feel cooler by cooling skin — and can trap heat in the core. The physiology of why feeling cool isn't being cool.

07/07/2026

Feeling cool isn't the same as being cool.

Most "cooling" on a hot job site works on the skin — a fan, a wet towel, a cooling vest. It feels like relief, but skin temperature isn't what governs output or safety. Core body temperature is. And cooling the skin broadly can actually signal the body to close the vessels it uses to shed heat — trapping it in.

The cost is measurable: every 1.8°F (1°C) rise in core temperature can strip roughly 13% of a worker's physical work capacity.
So the target isn't the skin. It's the core. Palmar cooling lowers core temperature through the one surface built to release heat — the palm. Cool the core, not just the skin.

Read this week's blog for the full science — "Why Most 'Cooling' Doesn't Cool What Matters." See more here → coolmitt.com

07/03/2026

The 2026 World Cup is being played in heat that hits 82.4°F (28°C) — the line where player-safety experts say to pause the match. FIFA's answer is a 3-minute water break each half. But a water break cools the mouth, not the core — and core temperature is what decides whether a body keeps performing.

You can't air-condition an outdoor stadium in July. You can cool the body. Cooling the palms pulls heat straight from the blood and lowers core temperature ~2.2°F (1.2°C) in 30 minutes. The midfielder in the 75th minute and the lineman working in the same heat are the same physiology.

Heat is the opponent that never subs off. Cool is the advantage.

See more here · coolmitt.com

07/01/2026

Dr. Andrew Huberman Andrew Huberman, Ph.D. talks with Mark Bell Mark Bell about how muscles don’t quit because they’re weak. They quit because they’re overheated

As he explains, the ceiling on your last set isn’t willpower, it’s temperature. Once your core hits a certain point, ATP stops firing the way it should and your muscles wave the white flag, even when your head says keep going.

Dr. Andrew Huberman broke down the Stanford research on this: cool the palms (one of three “glabrous skin” zones that dump heat faster than anywhere else on the body) and you can push 200 to 600% more reps at the same weight. Huberman saw a 60% jump in his own training. The original study took people from 100 pull-ups to 180.

That’s the whole idea behind CoolMitt. Three minutes, palm in the mitt, core temp drops, and the governor on your performance quietly lifts.

Mark Bell put it in his hands. We’ll let the reps do the talking.

Science, not hype. Link in bio to watch the YouTube clip

🎥 Mark Bell x Andrew Huberman, Ph.D.

06/29/2026

Europe's record heatwave has killed more than 1,300 people. Why the body — not the forecast — decides survival, and where cooling actually works.

06/25/2026

Your muscles don’t fail because they’re weak. They fail because they overheat.

CoolMitt cools you from the palms out, pulling heat from your core so you can push past the wall that used to end your set.

More reps. Better recovery between rounds. The same body, working longer.

This is what training without the ceiling looks like.

Follow for more on the science of cooling and performance. 🧊

06/22/2026

You can't air-condition the planet. But you can cool the body.

Heat isn't weather that happens to you — it's a performance variable, and core body temperature is the lever. Output falls roughly 13% for every 1°C your core climbs. So the most effective heat strategy was never the thermostat. It's the body.

Join us as we kick off a 14-week series on the science of performing in the heat.

06/22/2026

You can't air condition the planet — but you can cool the body. Why core body temperature, not the weather, is the real lever on performance and safety.More

You can't air-condition the planet — but you can cool the body. Why core body temperature, not the weather, is the real lever on performance and safety.

06/12/2025

Developed by our team and prominently displayed in the Stanford Athletics Hall of Fame, technology continues to be the competitive edge for the most elite athletes.

Peak performance in the gym, on the track/field and in-game with the most effective thermal regulation solution