The Cool Mitt device, developed by Craig Heller's lab, enhances work capacity by cooling the hands during weightlifting. Glabrous skin on the palms, soles, and face lacks hair follicles and has a high density of arteries, veins, and capillaries, functioning as efficient radiators for heat exchange. This unique skin type allows rapid heat dissipation from the body, aiding in cooling off, or on the contrary, facilitating heat retention when needed.