The principle behind these technologies is that collecting more data will help make us healthier. The message from experts I spoke with is that there’s potential in that idea, but it hasn’t been fulfilled yet.
NEW YORK TIMES (August 28, 2020): One big limitation of health devices, though, is that many people don’t know what to do with the data they see about their heart rate or how many hours they slept.
“We’re not doing a very good job of educating people what to do with that information. That’s the piece that’s missing,” said John Jakicic, the director of the Healthy Lifestyle Institute at the University of Pittsburgh. (Side note: For some people, having data on their sleep might actually be counterproductive.)
When your heart beats faster than usual, it can mean that you’re coming down with a cold, flu, coronavirus, or other viral infection. That’s the conclusion of recent medical 
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