Wearable technology has changed how we track training. Smartwatches and rings track heart rate, activity levels, and Heart Rate Variability (HRV)—a primary indicator of autonomic nervous system status.
HRV measures the variation in time between consecutive heartbeats. A high HRV suggests your nervous system is relaxed and ready for hard training, while a low HRV points to stress or under-recovery.
Use wearable data to guide, rather than dictate, your workouts. If your HRV is low and you slept poorly, swap your heavy deadlift session for a light recovery walk and mobility work. This helps prevent overtraining and keeps you injury-free.
Dr. Julian Vance
Sleep & Tech Researcher
A certified expert in sports science and fitness technology, sharing evidence-based guidelines to help athletes and coaches achieve lasting transformations.
