Health
What Your ‘Heart Rate Variability’ Says About Your Health – Lifehacker Australia
One feature a number of fitness trackers offer is a metric called “heart rate variability,” or HRV, which is the…
One feature a number of fitness trackers offer is a metric called heart rate variability, or HRV, which is the interval of time between each heartbeat. But given that we tend to think of our hearts beating at a steady and predictable pace, the fact that…
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