Wearable sensors that track heart rate or steps are popular fitness products. But in the future, working up a good sweat could provide useful information about a person's health. Now, researchers have developed a headband that measures electrolyte levels in sweat. And unlike many previous sweat sensors, the device can heal itself when cut or scratched during exercise.
from Health & Medicine News -- ScienceDaily https://www.sciencedaily.com/releases/2019/12/191218153435.htm
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