Is Runna Free? What You Get Without Paying, and What It Costs
Is Runna free? Only Week 1 of any plan is. Runna's US prices, trial lengths and the Strava bundle math, so runners can decide whether to pay or use a free plan.
Strava Strength Workouts Give the Muscle Map Real Data at Last
Strava strength workouts now log every set live, so the muscle map shows what was actually done. What subscribers get, and what it still doesn't measure.
Garmin Fenix 8 Update 23.40 Fixes the Dead Heart Rate Sensor
Garmin Fenix 8 update 23.40 fixes the heart rate sensor failure from 23.39, but reached only 20% of watches at first. What broke, and what owners should do.
Suunto Race 3S: 38 Hours of Dual-Band GPS and a Paid AI Coach
Suunto Race 3S records 38 hours of dual-band GPS in a 56g watch, but costs $250 more than Race S and adds a paid AI Coach. What changed and who it fits.
Apple Watch on a Huawei Phone: Notifications Yes, Health Data No
An Apple Watch can now show calls and texts from a Huawei phone via a HarmonyOS app. What works, why health data stays on the iPhone, and who it suits.
Garmin API Terms: Why Intervals Pro Shut Down and Who's Next
New Garmin API terms limit how platforms pass on your data, and Intervals Pro has already shut down. Which apps and AI tools are at risk, and what still works.
Garmin MARQ Gen 3 Review: Fenix 9 Features at $2,500 and Up
The Garmin MARQ Gen 3 adds LTE, satellite SOS, a flashlight and a 3,000-nit display from $2,500. DC Rainmaker's tests, and who should pay over a Fenix 9.
Polar H10 Resonance Breathing: SYMPATHETIC Adds HRV and ECG
SYMPATHETIC is a free iPhone app that pairs Polar H10 resonance breathing with live HRV and ECG views. What it measures, its limits, and who it suits.
Fitbit Edge: The Charge 6 Successor Fixes GPS but Costs $179
The Fitbit Edge replaces the Charge 6 with working GPS, an altimeter and a swappable battery, but drops Google Pay and costs $179. Who should upgrade.
Garmin Enduro 4: Fenix 9 Smarts, Same $899, Same Battery Life
The Garmin Enduro 4 adds Fenix 9 software, more RAM and double the storage at the same $899, with unchanged battery life. Who should upgrade from Enduro 3.
Cala kIQ Plus: The First Wearable Neurostimulator With Multiple Waveform Modes Goes National
The FDA-cleared Cala kIQ Plus is now available across the US: the first wearable with multiple stimulation waveform modes for action hand tremor.
Oura Ring Just Connected to Xella's Women's Health Platform — This Is What Clinical Interpretation of Wearable Data Actually Looks Like
Xella now pulls Oura Ring sleep, HRV, and temperature data into clinical interpretation alongside hormone tests, covering 130+ female-specific conditions.
Ultrahuman's HealthEx PowerPlug Maps 532 Medical Conditions to Your Ring Data — And Generates Doctor-Ready Visit Summaries
Ultrahuman's HealthEx PowerPlug integrates electronic medical records with Ring biomarker data — mapping 532 conditions, medications, and procedures to a unified timeline alongside heart rate, HRV, skin temperature, and sleep. Launches at $4.99/month or $45.99/year; HealthEx Wallet remains free.
Apple Watch Series 12 Can Now Estimate Your Biological Age. Here's What It Actually Measures.
Apple Watch's new Longevity tab introduces a Health Age metric built from VO2 max, resting heart rate, sleep quality, and HRV — plus optional lab inputs. The hardware update delivers 24x faster HRV refresh and splits HRV into two clinically distinct signals.
Mito Health Hits 1 Million Lab Tests — and the $9 Membership Model Is Why It Matters
Mito Health, the direct-to-consumer diagnostics platform, has processed over 1 million lab tests at cost with a $9/month flat-fee membership. The milestone marks a shift in how serious longevity practitioners access biomarker data — no insurance, no referrals, no per-test markup.
Oura Health Files for IPO at $16 Billion: What a Smart Ring's Valuation Tells Us About Biometric Data
Oura Health is targeting a $3B raise at a $16B valuation — a 45% jump from 18 months ago — built on a hardware-plus-subscription model that turns sleep and recovery data into recurring revenue.
KardiaMobile 6L: The Study That Found Twice as Many Arrhythmias as Hospital Monitors
A University of Rochester cohort study published in JACC Advances found AliveCor's KardiaMobile 6L detected nearly twice the arrhythmia rate of traditional short-duration ECG monitors in 350 patients over 30 days.
Ultrahuman's Emerald Update Answers a Question Wearables Kept Ignoring
Ultrahuman's Emerald overhaul replaces spreadsheet-style metrics with a decision engine that tells you what to actually do next — plus a VO2 max algorithm validated to lab-grade accuracy.
Dumbo Health Is Turning Sleep Into a Clinical Longevity Metric — Here's What That Means
Miami-based Dumbo Health launched Sleep Longevity: 51 blood biomarkers, wearable data, and physician care in one membership. The 90% of women with undiagnosed sleep apnea are the real target.
Google's SensorFM: What a 1-Trillion-Minute Wearable Dataset Changes
Google's new foundation model for wearable sensors outperformed prior models on 34 of 35 health tasks — and what it means for the future of passive health monitoring.
Dry Fasting for 5 Days: What the Biometrics Actually Showed
A measured 5-day dry fast tracked with continuous glucose, ketones, HRV, InBody scans, and grip strength. What the data showed — and what the dehydration artifact gets wrong.
Medtronic and Corsano Are Building the Hospital-to-Home Wearable Stack
Medtronic's integration of Corsano's FDA-cleared multi-parameter wearable into its HealthCast platform extends clinical monitoring from pre-op through home recovery — targeting alarm fatigue along the way.
Ultrahuman M2 Live Makes Continuous Glucose Monitoring Mainstream
Ultrahuman's M2 Live pairs with Abbott's OTC Lingo CGM to bring prescription-free glucose tracking to anyone for $99/month — removing the biggest barrier to metabolic health monitoring.
Clair Raises $11.6M to Build the First Continuous Hormone Monitor for Women
Clair's wrist-worn device uses 10 biosensors and 130+ proprietary biomarkers to infer estrogen, progesterone, LH, and FSH levels in real time — revealing 9 distinct hormonal sub-phases the traditional 4-phase model misses.
Sky Labs' CART BP Pro Ring Heads to Europe After 260K+ South Korean Prescriptions
Sky Labs is launching its cuffless blood pressure monitoring ring in Europe and the UK, backed by CE-MDR certification and a 260,000+ prescription track record in South Korea.
Oura Ring 5: The Smallest Smart Ring Gets Serious About Health Data
Oura Ring 5 launches 40% smaller with a month-long charging case, blood pressure signal detection, and GLP-1 medication insights. What's genuinely new and who the upgrade makes sense for.
Oura Ring 5: The World's Smallest Smart Ring Adds Blood Pressure Signals and GLP-1 Insights
Oura Ring 5 launches 40% smaller than its predecessor with rebuilt sensors, blood pressure monitoring signals, and a portable charging case. Here's what's new and who the upgrade makes sense for.
Wearables: When Your Fitness Tracker Becomes a Medical Device
WHOOP's 2025 FDA warning revealed a hidden boundary inside wearables. As brands add clinical features, the wellness exemption is under pressure — and the implications run far beyond WHOOP.
Wearables Are Writing Checks the FDA Can't Cash: The Regulatory Gap Getting Harder to Ignore
WHOOP earned $34.5M in federal backing. Apple Watch won an ECG clearance. And the FDA's framework for governing what these devices claim is still built for episodic care, not continuous monitoring.
Sky Labs CART: A Cuffless BP Ring With Real Regulatory Approval
Sky Labs' CART ring cleared UK MHRA and EU CE-MDR after 1,700 Korean hospitals and 150,000 prescriptions. What cuffless 24-hour BP monitoring actually requires.
WHOOP Goes Clinical: What On-Demand Doctor Access Means for Your Recovery Data
WHOOP launches live clinician consultations on May 19 — the same day Fitbit rebrands to Google Health. What the parallel moves mean for serious health trackers.
ŌURA's Acquisition Strategy: Building a Health AI Stack From Ring to Medical Records
Oura has acquired five companies since 2023 — gesture control, metabolic data, performance analytics, and now clinical records across 800+ healthcare systems. The pattern reveals a deliberate platform strategy.
Osteoboost's FDA-Cleared Wearable Uses Vibration to Slow Bone Loss
Osteoboost's prescription wearable delivers high-frequency vibration to the lumbar spine to slow bone density loss — FDA cleared, 82% adherence in trials, and backed by $8M to crack insurance coverage.
Longevity Quotient: When a Clinical Score Meets Continuous Wearable Data
Agentis Longevity integrates Ultrahuman's Ring AIR and M1 CGM into its Longevity Quotient — giving a five-component clinical score a real-time wearable data layer.
Ultrahuman Wearables Now Power a Living Longevity Score
Agentis and Ultrahuman link real-time ring and CGM data to the Longevity Quotient — a living composite score that tracks where your health trajectory is heading.
Peter Attia AMA #82: From Longevity Theory to Real-World Practice
AMA #82 shifts from mechanism to application — DEXA interpretation, wearables use, stability training, and the habits that actually stick for patients in their 40s through 60s.
Your Smartwatch May Be Able to Predict Cognitive Decline — Before You Notice It
A University of Geneva study using 88 participants over 10 months found AI can predict fluctuations in brain health from passive wearable data with just 12.5% average error.
Sleep: Top Health Priority, Lowest Follow-Through
ResMed surveyed 30,000 people across 13 countries: 84% know sleep extends healthy lifespan, but 53% get quality sleep only 4 nights a week. Wearable tracking tripled in one year.
Why Your Biohacking Stack Isn't Working: The Context Problem
The reason most health interventions fail isn't the intervention — it's the absence of a personalized model of how your biology actually responds.
The Architecture of Continuous Biosensing: From Wearables to Woven Systems
Analyzing the 2026 shift toward multi-sensor biosensing platforms and the quantification of aging through the ARPA-H and WHOOP initiative.
Oura Ring 4 vs Eight Sleep Pod 5: The Recovery Architecture Duel
A technical comparison of wearable versus environmental recovery systems for high-performance human architecture.
The Data-Driven Evolution: Biohacking in 2026
Exploring the shift from anecdotal wellness to rigorous, data-driven personal health optimization.