One overlooked metric that may affect your sleep is your heart rate variability. Here's the link between HRV and your sleep quality. Luke Daugherty is a freelance writer, editor and former operations ...
A higher HRV may indicate better physical fitness and resilience to stress, while a lower HRV is associated with anxiety and ...
Heart rate variability (HRV) and resting heart rate (RHR) are the metrics that most wearables' "recovery" numbers are based on. I wore five devices to bed for two weeks to see how their readings ...
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