"Equal to or substantially better than steroids … and it's not illegal."
This is the sort of claim you see in spam email subject lines, not in discussions of mammalian thermoregulation. Even the man making the statement, Stanford biology researcher Dennis Grahn, seems bemused. "We really stumbled on this by accident," he said. "We wanted to get a model for studying heat dissipation."
But for more than a decade now, Grahn and biology Professor H. Craig Heller have been pursuing a serendipitous find: by taking advantage of specialized heat-transfer veins in the palms of hands, they can rapidly cool athletes' core temperatures – and dramatically improve exercise recovery and performance.
The team is finally nearing a commercial version of their specialized heat extraction device, known as "the glove," and they've seen their share of media coverage. But what hasn't been discussed is why the glove works the way it does, and what that tells us about why our muscles become fatigued.
