Hiyd is a health tracker that attaches to the watch you already wear
Former Apple engineers figured out how to get a biometric sensor to attach to your watch without any magnets or adhesives.
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Whoop’s fitness band is cool. Can it stay cool as the company grows?
Whoop founder Will Ahmed has spent 14 years building a health wearable beloved by elite athletes and is now racing Oura — and the FDA — to turn it into something that could one day save your life.
