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Why Do I Need HRV?
When I started using heart rate variability in my environment over a decade ago, what was striking to me is that it tells us different information than what just heart rate alone can tell us. Most of the time when your heart variability is low, it's because your sympathetic nervous system is dominating. And so what we tend to see there is that heart rate goes up and HRV goes down. But when you see that happen, you also see resting heart rate go down. That's actually a sign of being like hyper recovered. It's you see a taper, olympians, Olympic swimmers,. We saw that actually in the data leading up to Rio is we saw this parasymp