<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[Activate Your Age]]></title><description><![CDATA[Movement-based longevity testing for adults 50+]]></description><link>https://www.activateyourage.com/blog</link><generator>RSS for Node</generator><lastBuildDate>Fri, 18 Sep 2026 03:38:46 GMT</lastBuildDate><atom:link href="https://www.activateyourage.com/blog-feed.xml" rel="self" type="application/rss+xml"/><item><title><![CDATA[What a Real Functional Fitness Assessment for Older Adults Actually Measures (And Why It's Not in Google's Top Results)]]></title><description><![CDATA[Try Googling "functional fitness assessment older adults." What you'll get back is a stack of academic papers. Systematic reviews. Sensor-based gait analysis studies. Nothing that actually tells you, in plain language, what this is or why it matters. Why? Because although there is tons of well-validated research on the topic, most if it has just never made it out of the journals and into anything a person can actually use. So here's the plain-language version, specifically what we actually...]]></description><link>https://www.activateyourage.com/post/what-a-real-functional-fitness-assessment-for-older-adults-actually-measures-and-why-it-s-not-in-go</link><guid isPermaLink="false">6aac6a5777684b726ca1e7a1</guid><pubDate>Thu, 17 Sep 2026 22:44:08 GMT</pubDate><dc:creator>Jeff Stepp</dc:creator></item><item><title><![CDATA[Your Apple Watch Is Lying to you about your VO2 Max — Here's What a Real Test Costs and Where to Get One in the South Bay]]></title><description><![CDATA[Everyone's watch has an opinion about your VO2 max now. Garmin, WHOOP, Oura, Apple Watch — pull up the app and there it is, a number supposedly telling you how fit you are. Turns out that number is mostly a guess. Your watch doesn't, and physically cannot, measure VO2 max. Instead, it estimates it using your heart rate and your pace. A real VO2 max test measures the actual gas you're breathing in and out while you work at your cardiometabolic limit. Your watch has none of that ability; it's...]]></description><link>https://www.activateyourage.com/post/your-apple-watch-is-lying-to-you-about-your-vo2-max-here-s-what-a-real-test-costs-and-where-to-get</link><guid isPermaLink="false">6aac68083f6cb6099e56264b</guid><pubDate>Thu, 17 Sep 2026 22:44:05 GMT</pubDate><dc:creator>Jeff Stepp</dc:creator></item></channel></rss>