Frozen blueberries are often used as a simple, accessible method for cooling hands during workouts. While not as effective as specialized cooling devices, they can provide a temporary cooling sensation. The idea is to hold the bag of frozen blueberries to the palms of the hands to potentially lower core body temperature and improve performance.
A number of people said to me after learning a little bit about this science and technology that they've experienced some big effects uh positive effects of of cooling by uh and I confess I've done this taking a a package of frozen blueberries and just kind of passing it back and forth between my hands.
""Frozen blueberries are mentioned as a DIY method for hand cooling, a technique discussed for improving athletic performance. While not a specialized product, they are used in a similar way to the Cool Mitt, making them relevant to the conversation."