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What is HRV? WHOOP VP of Performance Kristen Holmes and Director of Analytics Emily Capodilupo discuss everything there is to know about heart rate variability, including what it is (3:39), why it's such a valuable metric (7:06), how it's an indicator of fitness (10:11), what things affect it (12:59), why WHOOP tracks it during sleep (17:27), the role it plays in recovery (23:04), how it fluctuates regularly (26:42), why it's hard to say what a "normal" HRV is (30:07), the reason it's most beneficial to follow trends over time (32:11), and lifestyle choices to improve HRV (33:00) like better hydration (36:42), nutrition (39:19) and sleep (42:30).
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