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.
Mito's $249 Heart Scan: What a Coronary Calcium Score Actually Tells You
Mito Health now offers a $249 coronary artery calcium scan, which shows existing arterial plaque. Who the 2026 ACC/AHA guidelines say should consider one.
Peptide Medicine's Gray Market Is Closing. Here's What Comes Next.
The gray-market peptide ecosystem — BPC-157, TB-500 — is formalizing under regulatory pressure. What that shift means for biohackers who depend on it.
Best Outdoor Saunas: What to Know Before You Build (Site Prep, Foundation, and Hardwired 240V)
An outdoor sauna is a building project: site prep, foundation, a 240V circuit, and drainage come first. How to choose an outdoor sauna for your site.
Myostatin Inhibitors Can Build Bigger Muscles — But Not Stronger Ones
Myostatin inhibitor trials add muscle mass on MRI without gains in grip strength or walk tests. Peter Attia's four hypotheses for why size and function split.
Choose Your Home Sauna Heat System Before You Choose a Brand
Traditional, infrared, hybrid, and portable home saunas solve different problems. Why choosing the heat system before the brand avoids the costliest mistake.
FDA Puts Aging on Its Regulatory Science Agenda — What That Actually Means
The FDA added aging to its regulatory science agenda. It signals seriousness about longevity but creates no new trial pathway or approval. What it does mean.
Peter Attia's Framework for Prioritizing Health Interventions — What's High-Impact vs. Optimization
Peter Attia separates foundation interventions (exercise, sleep, nutrition) from optimizations like supplements, judged by effect size and trade-offs.
The Longevity Biotech 100x Return Is Real — But It's Social Value, Not Investor Profit
A model puts $366.8 trillion of social value on therapies adding 10 years of life, against $3.3 trillion in costs. Why that 100x isn't an investor return.
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.
Peter Attia on Thyroid Health: Why 5% of Adults Are Mismanaged, TSH Isn't the Full Picture, and What to Do When Tests Look Normal But You Don't
In AMA #89, Peter Attia addresses thyroid dysfunction — one of medicine's most commonly mismanaged conditions. TSH measures pituitary signaling, not tissue-level T3 activity. He stakes out the messy middle between under-treatment and over-treatment camps, with a framework for evaluating subclinical dysfunction and persistent symptoms with normal tests.
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.
Yale Tested 51 Antiaging Interventions. Only 13 Actually Worked.
A Yale University-led study published in Nature Medicine analyzed 51 human intervention studies across 3,128 blood samples using 16 epigenetic clocks and 94 DNA methylation biomarkers. Result: 51% of interventions showed no significant epigenetic age change. Senolytics failed. Anti-TNF therapies and Mediterranean diet protocols produced genuine, reproducible effects.
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.
Screens Aren't Causing the Myopia Epidemic. The Real Culprit Is What They're Replacing.
Peter Attia reviews the evidence on rising nearsightedness rates and finds screens are a weak causal factor — the real driver is reduced outdoor time and the loss of bright-light exposure that comes with it. 90–120 minutes outside daily is the most evidence-backed intervention.