How Heart Rate Variability Enhances Sleep Tracking
Heart rate variability (HRV) is powerful for sleep tracking. High HRV = healthy nervous system. Low HRV = stress or poor recovery. During sleep, HRV changes predictably across stages. Your sleep tracker uses HRV to distinguish stages with greater accuracy. A declining HRV trend may signal overtraining. Wonder Sleep tracks overnight HRV correlated with sleep stages.
Top comments (0)