Factors including stress, hormones, anxiety, medication, and physical activity also contribute to what may be considered a ...

The Garmin fenix 7X Sapphire smartwatch is currently 20 percent off at Cabela's. It tracks respiration, sleep, hydration, and ...

The Galaxy Watches, including the Watch 4, use a PPG sensor. The technology is very efficient at measuring your heart rate ...

Putting sensors in the wearable's band could unlock a host of health-monitoring features—if the patented device ever becomes ...