There's a plethora of devices out there that let athletes, amateur doctors, and even hypochondriacs constantly monitor their heart rates
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Category: tlc miguel cotto world war z Brant Daugherty Outside Lands
Sunday, October 27, 2013
A Cheap Pair of Headphones Can Accurately Measure Your Heart Rate
Category: tlc miguel cotto world war z Brant Daugherty Outside Lands
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