VO2 max on Apple Watch: what the number means and how to use it
VO2 max, labeled Cardio Fitness on Apple Watch, is one of the strongest predictors of long-term health your Watch tracks. […]
Heart rate recovery on Apple Watch: what the number means
I finished a tempo run, stopped my workout, and watched the number appear: Recovery Rate, 31. I had no idea
Resting heart rate on Apple Watch: what it means and how to use it
I noticed my resting heart rate had crept up eight beats over three weeks. There were no obvious symptoms and
Apple Watch sleep tracking: how it works and what to do with the data
The sleep score said 90. Excellent. My deep sleep was 7%. Those two things can both be true at the
What Apple Watch training load means and how to read it
Every time I finished a hard week of runs, I’d open my Activity app and see all 3 rings closed.
How to build a daily recovery score with your Apple Watch data
Apple collects your health data 24/7. The problem is it’s scattered across multiple apps with no single answer. Here’s the
Apple Watch Vitals explained: what the morning summary means and how to use it
Every morning I check 3 things before I get out of bed. HRV in the Health app. Training Today to
Apple Watch HRV explained: what the number means and what to do with it
You open Apple Health, scroll to Heart Rate Variability, and see a number like 38ms. It was 52ms last week.
Apple Watch vs Oura Ring: We’ve Worn Both for Months (Updated 2026)
My wife wears an Oura Ring 3. I wear an Apple Watch Series 10. Every morning over coffee, we compare