Palm-cooling devices help athletes bounce back quickly from heat stress

Palm-cooling devices are showing up on sidelines, in training camps, and wherever the heat is on.

They're designed to help humans bounce back quickly from exertion and heat stress by chilling their palms.

High-level athletes across numerous sports have begun adopting palm cooling as a training and recovery tool to fight against the known effects of heat stress on the body.

Most of today ’s palm-cooling devices target a consistent temperature range of between 45 and 60 degrees Fahrenheit.

Most athletes hold the device in one hand, while some are designed to be held by both hands.

As blood passes through the palm, the device extracts heat and returns cooler blood to the rest of the body.

Palm cooling can now be found across virtually every major sport.

AVA Cooling , a company offering a $ 70 device, has developed a sleep protocol for people who struggle to relax after late-night sports or workouts.

Some users even report mental benefits from palmar cooling, though there’s little research to suggest the technique has any calming psychological effects.