Kim Nartker is a movement-health pioneer who has spent more than 20 years in the physical therapy field, only to discover the truth most of us were never taught: stiffness and tightness are not aging; they are early signs of joint decline.
After decades of working inside traditional healthcare, Kim realized there was a massive gap between what the system treated and what people actually needed. Science clearly showed a different story about movement health, nervous system protection, and joint mobility, yet no clinical model addressed it.
So she built one.
Through years of research, testing, and hands-on work with thousands of clients, Kim developed the Flexibility Health Test, the first assessment designed to identify joints that are in a protected, declining state—long before pain shows up. This decline in joint flexibility is the missing biomarker in movement health and the root cause of the stiffness, tightness, and early degeneration that millions silently struggle with.
Today, Kim teaches people that tightness isn’t “normal aging.” It’s a signal, just like the check-engine light in your car. And ignoring it sets you on a predictable path toward dysfunction, compensation, degeneration, and mobility loss.
Her mission is simple:
To help people restore their flexibility at the source, protect their joints for life, and expand their healthspan—not just their lifespan.
On this podcast, Kim brings her expertise, her honesty, and her passion for human movement to help you understand what’s really happening inside your body… and what you can do today to move younger, longer.
And for movement professionals who want to change lives the way she does, Kim also offers the Stretch Mobility Coach™ Certification, a complete training pathway rooted in The Stretch Method® that teaches providers how to identify, reset, and restore flexibility health in their own clients.
Hosted on Acast. See acast.com/privacy for more information.
Kim Nartker is a movement-health pioneer who has spent more than 20 years in the physical therapy field, only to discover the truth most of us were never taught: stiffness and tightness are not aging; they are early signs of joint decline.
After decades of working inside traditional healthcare, Kim realized there was a massive gap between what the system treated and what people actually needed. Science clearly showed a different story about movement health, nervous system protection, and joint mobility, yet no clinical model addressed it.
So she built one.
Through years of research, testing, and hands-on work with thousands of clients, Kim developed the Flexibility Health Test, the first assessment designed to identify joints that are in a protected, declining state—long before pain shows up. This decline in joint flexibility is the missing biomarker in movement health and the root cause of the stiffness, tightness, and early degeneration that millions silently struggle with.
Today, Kim teaches people that tightness isn’t “normal aging.” It’s a signal, just like the check-engine light in your car. And ignoring it sets you on a predictable path toward dysfunction, compensation, degeneration, and mobility loss.
Her mission is simple:
To help people restore their flexibility at the source, protect their joints for life, and expand their healthspan—not just their lifespan.
On this podcast, Kim brings her expertise, her honesty, and her passion for human movement to help you understand what’s really happening inside your body… and what you can do today to move younger, longer.
And for movement professionals who want to change lives the way she does, Kim also offers the Stretch Mobility Coach™ Certification, a complete training pathway rooted in The Stretch Method® that teaches providers how to identify, reset, and restore flexibility health in their own clients.
Hosted on Acast. See acast.com/privacy for more information.

Today, I want to bust a big myth in sports about muscle cramps and spasms. Most people assume they’re just caused by dehydration or low electrolytes—but what if that nagging cramp or spasm is actually a sign that your body isn’t fully ready to move?
In this episode, I break down how healthy flexibility and movement readiness play a major role in preventing cramps, whether you’re a teenage athlete, an adult soccer player, or just someone who wants to move better. We’ll talk about how tight or restricted joints can cause muscles to “silence” themselves, leading to weakness, spasms, and delayed recovery—even if you’re drinking plenty of water.
I’ll walk you through how joint and muscle optimization, combined with our proprietary testing methods, can identify the areas that need attention and help you regain strength, mobility, and confidence in your movement. If you’ve been struggling with recurring cramps or tightness, this episode will give you a fresh perspective on why hydration isn’t the whole story—and what you can do about it.
Tune in to learn how to keep your body cramp-free, ready to move, and performing at its best.
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Hosted on Acast. See acast.com/privacy for more information.