Most modern smartwatches come equipped with accelerometers, gyroscopes, and heart rate monitors. These sensors work together to track your movements and heart rate throughout the night. Here's how it breaks down. When you fall asleep, your smartwatch detects the decrease in your physical activity and heart rate. This helps the device determine when you’ve transitioned from wakefulness into light sleep. As you move less and your heart rate drops further, the smartwatch can identify deep sleep stages. REM sleep, or Rapid Eye Movement sleep, is a bit trickier to detect, but advanced algorithms analyze variations in your heart rate and subtle movements to estimate these periods.
Junaise Kodiyalathu
Негізгі бет How Smartwatches Track Your Sleep & Why
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