WWG Journal
Insights from the Lab
Physician-tested wearable accuracy, plain-language metrics, and data-driven habits for better sleep, recovery, and long-term health.
5 Evidence-Based Tips to Improve Your Sleep Score on Oura, WHOOP & Garmin
Boost your nightly recovery with physician-reviewed sleep hygiene habits that actually move the needle on your wearable sleep score.
HRV Scores: What Is a Normal Range by Age, and When Should You Worry?
Heart rate variability explained in plain language, with age-based reference ranges and the 3 patterns that actually need medical follow-up.
How Accurate Are Step Counts, Really? We Tested 22 Trackers Head-to-Head
The surprising truth about which devices count stairs, cycling arms, and driving vibrations as steps — and the 3 you can trust.
Do Smart Scales Actually Measure Body Fat? We Compared 11 Models to DEXA
BIA vs. DEXA head-to-head: which smart scales are close enough to use, and which ones are just random number generators.
Orthosomnia: When Fixating on Your Sleep Score Makes Your Sleep Worse
Recognize the signs, understand the feedback loop, and get 5 practical steps to break the cycle without throwing your tracker away.
Resting Heart Rate: What Is Normal by Age, and 5 Reasons Yours Might Suddenly Spike
Understand your RHR baseline using our reference chart, and know which sudden spikes are benign vs. worth a call to your doctor.