Nadia Halloran
Covers everything the body does overnight: sleep staging, heart rate variability, resting heart rate and the gap between what a wrist sensor measures and what it reports. Wrote most of the recovery documentation and reviews the pieces that tell people what a number means about their health.
Sleep · Recovery · HRVDublinHere since September 2025
Written by Nadia
- Why is my HRV low?Blog · Aug 2026
- Apple Watch Sleep Score, explainedBlog · Aug 2026
- How to improve your Apple Watch Sleep ScoreBlog · Aug 2026
- How much deep sleep do you actually need?Blog · Aug 2026
- What is a normal sleeping heart rate?Blog · Aug 2026
- Respiratory rate while sleepingBlog · Aug 2026
- Why do I wake up at 3am?Blog · Aug 2026
- Apple Watch wrist temperature, explainedBlog · Aug 2026
- The best Apple Watch for sleep trackingBlog · Aug 2026
- Apple Watch sleep apnea notificationsBlog · Aug 2026
- Apple Watch hypertension notificationsBlog · Aug 2026
- How to check HRV on your Apple WatchGuide · Jul 2026
- Apple Watch sleep tracking, set up properlyGuide · Jul 2026
- How to improve your HRVGuide · Jul 2026
- How to pay down sleep debtGuide · Jul 2026
- Recovery scoreDocs
- SleepDocs
- The sleep-anchored dayDocs
- StressDocs
Reviewed by Nadia
- WHOOP vs Apple WatchBlog · Aug 2026
- Apple Watch not tracking sleepBlog · Aug 2026
- Does the Apple Watch have a readiness score?Blog · Aug 2026
- How long alcohol affects your HRV and sleepBlog · Aug 2026
- How to lower your resting heart rateBlog · Aug 2026
- Apple Watch battery draining fastBlog · Aug 2026
- Is the Oura Ring worth it?Blog · Aug 2026
- Does the Oura Ring work with Apple Health?Blog · Aug 2026
- Do massage guns actually work?Blog · Aug 2026
- Cold plunge vs saunaBlog · Aug 2026
- How long does it take to recover from a marathon?Blog · Aug 2026
- WHOOP vs HelixBlog · Jul 2026
- Oura Ring vs HelixBlog · Jul 2026
- How recovery scores actually workBlog · Jul 2026
- How to read your bloodwork like an athleteGuide · Jul 2026
- Your Resting Heart Rate Knows FirstDeep dive · Jul 2026
- Your first morningDocs
- BloodworkDocs
- TroubleshootingDocs
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