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Research shows meditation can increase HRV in as little as 10 days. Here's the science behind it and practical techniques to get started.

Apple Watch can track HRV, but there are tricks to getting accurate data. Here's everything you need to know about measuring heart rate variability on your Apple Watch.

Your HRV naturally fluctuates throughout your menstrual cycle. Understanding why can help you interpret your data and optimize training and recovery.

Caffeine is the world's most popular stimulant, but how does it affect your HRV? Research reveals surprising findings about coffee and autonomic function.

Garmin and Polar both offer excellent HRV tracking for athletes. We compare accuracy, features, and recovery insights to help you choose.

Cold plunges are everywhere, but do they actually improve your HRV? Here's what the research says about cold exposure and your autonomic nervous system.

Ever noticed your HRV tank after a night out? Here's exactly what alcohol does to your heart rate variability and how long recovery takes.

Discover the science-backed breathing techniques that can significantly improve your HRV. From resonance breathing to cyclic sighing, here's how to use your breath to optimize autonomic function.

Independent research reveals which HRV monitors actually deliver accurate readings. Here's our tested ranking for 2026.

Heart rate variability might sound technical, but it's actually one of the simplest and most powerful ways to understand your body's overall health and stress levels.

Children's HRV patterns differ significantly from adults. Here's what the research says about normal ranges, development, and what parents should understand.

The Whoop 5.0 brings significant upgrades to the popular recovery-focused wearable. Our in-depth review covers all the new features and whether it's worth upgrading.