"To continuously monitor your heart rate, a smartwatch emits green light onto your wrist. The green light absorbs red blood, allowing the watch to track heart rate changes effectively."
"The tighter your watch is to your skin, the less outside light interferes with this heart rate data capture, leading to more accurate readings during exercise."
Accurate health data from smartwatches can be achieved by adjusting how the device is worn. A tight fit minimizes outside light interference, enhancing heart rate monitoring. Smartwatches use green light to detect blood flow changes, with the optical sensor converting this data into heart rate measurements. Companies like Apple and Google invest heavily in sensor technology, but proper fit is crucial for optimal performance. A snug fit ensures better data accuracy during exercise, making it essential for users to adjust their smartwatch accordingly.
Read at ZDNET
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