New hardware coming out which sucks(removes) heat from extremenities by placing slight vacuum on them & circulating coolant. This improves muscle performance significantly and can be used in conjunction with the firemancooler during rest periods. By taking advantage of specialized heat-transfer veins in the palms of hands, they can rapidly cool firemans core temperatures and dramatically improve exertion recovery and performance. These networks of veins, (arteriovenous anastomoses) seem exclusively devoted to rapid temperature management. They don't supply nutrition to the skin, and they have highly variable blood flow, ranging from negligible in cold weather to as much as 60 percent of total cardiac output during hot weather or exercise.
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