HRV is everywhere in wearables, but the number on your watch is only useful when you understand what it measures, why devices differ, and why trends matter more than single readings.
HRV is everywhere in wearables, but the number on your watch is only useful when you understand what it measures, why devices differ, and why trends matter more than single readings.
Because whether you're running, strength training, or pushing yourself to the limit during high-intensity interval training, the role of breathing is much greater than you might imagine.
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