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1 .This is Scientific American 60-Second Science. I'm Karen Hopkin. This'll just take a minute.
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2 .Do you like working up a sweat?
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3 .Or do you feel like maybe sweat should work for you?
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4 .Well, hold on to your sudoriferous glands.
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5 .Because researchers have designed a device that could someday produce power from your perspiration.
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6 .The schvitzy scheme was presented at the annual meeting of the American Chemical Society in San Francisco.
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7 .Strenuous exercise generates lactate, the molecule that makes overworked muscles burn.
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8 .Athletes sometimes evaluate their fitness by checking the lactate levels in their blood.
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9 .To cut down blood draws, researchers came up with a monitor that could measure the lactate in sweat.
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10 .The device they designed strips electrons from lactate, which creates a small electric current.
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11 .The strength of the current reveals the amount of lactate present.
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12 .To test the system, 10 volunteers wore the arm-patch sensor while they rode a stationary bike.
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13 .And the device recorded the current they delivered as they dripped.
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14 .Then the researchers thought, what if they could tap into this energy to develop a sort of sweat-powered "bio battery?"
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15 .Their proof-of-concept setup topped out at only about 4 microWatts of juice¡ªnot even enough to run a watch.
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16 .But with better electronics, exercising in the future could make dirty clothes and some clean energy.
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17 .Thanks for the minute, for Scientific American 60-Second Science. I'm Karen Hopkin.
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