Extend Podcast with Darshan Shah, MD
Hosted by Dr. Darshan Shah
Written by a model from the transcript; not yet reviewed.
This episode features Dr. Darshan Shah interviewing Dr. Jason Werschler, a chiropractor and the founder of Therabody, about the science of physical recovery, pain management, and nervous system regulation. Dr. Werschler shares his personal story of inventing the first percussive therapy device in his garage out of sheer necessity after a severe motorcycle accident left him with a debilitating disc injury. Together, the host and guest explain the mechanics behind the pain gate theory, the importance of addressing muscular tension, and why recovery tools should not be reserved solely for elite athletes.
The episode opens with the host welcoming listeners and setting the stage for a discussion on recovery science.
Dr. Werschler shares his background, motorcycle accident, and how necessity led to inventing the first percussive therapy device.
Both hosts discuss how recovery tools apply to anyone experiencing physical stress, from office workers to caregivers, and the importance of parasympathetic activation.
The device’s pain relief, tension reduction via Golgi tendon activation, and increased blood flow are broken down and illustrated with real‑world examples.
Werschler describes the pain gate theory and how vibration can override pain signals, illustrating the science behind Theragun’s effectiveness.
Werschler explains how Theragun can stimulate the parasympathetic nervous system, improve heart‑rate variability, and support better sleep and performance.
The conversation turns to actionable daily recovery habits—short “pit stops,” movement, stretching, and using Theragun at key moments to maintain balance.
Hosts share strategies for embedding recovery into office routines, home life, and athletic training, emphasizing the need for consistent, small interventions.
Discussion of Therabody’s smart goggles, potential biofeedback, and the broader vision for nervous system regulation across all performance levels.
Discussion of using wearable biofeedback to lower heart rate and the role of HRV in recovery.
The guest details how pneumatic sequential compression boots move blood and mimic walking to aid recovery.
Examples of using compression boots in hospitals, gyms, and daily life, emphasizing accessibility and necessity.
Inventing The First Theragunstory
The guest explains how a severe motorcycle accident and resulting nerve pain drove him to tinker with a jigsaw in his garage to build the first percussive therapy device.
Applying The Pain Gate Theoryinsight
The guest explains how percussive therapy uses faster skin stimulus to override pain signals traveling to the brain, effectively acting on the pain gate theory.
Testing On A Patientstory
After using the jigsaw prototype on himself, the guest brought the device into his chiropractic clinic to help a patient who was suffering from a severe car accident injury.
Three Core Theragun Functionsstrategy
The guest outlines the three main physiological actions of the device: decreasing pain via the pain gate theory, activating the Golgi tendon for range of motion, and increasing blood flow.
Fixing Upper Back Straininsight
The guest explains why desk workers who feel pain in their rhomboids should actually treat their tight chest muscles first to allow the back muscles to relax.
The Parasympathetic Surprisestory
The guest shares an anecdote about treating Olympic athletes too long before a competition, accidentally triggering their parasympathetic nervous system and making them sleepy.
Sequential Pneumatic Compressionstrategy
The guest describes how compression boots use air bladders in a sequence to squeeze venous blood upward and pull fresh arterial blood down into the legs.
“I was going to school, was supposed to take three and a half years in an accelerated program. I had two kids and I was doing everything I could to get through school.”
“The pain gate theory was like, I mean, I could really pass out for a few minutes and not have pain.”
“We have over 30 studies on how Theragun can help the body recover, how it helps perform.”
“You have to stretch or move after. You can't just sit and treat it.”
“So the goal with the goggles was to, to put someone in a parasympathetic state in 15 minutes. That was the goal.”
“It's not a sleep tool. You're not, it's not intended to wear while you're sleeping.”
“Biofeedback gets people into a state of where they are putting themselves in the mindset or thinking relaxing thoughts or doing some breath work and they see the heart rate come down.”
“The boots, when people see them, I ran into this lady, she's a runner, worked at Apple.”
“We don't release products unless we have protocols and claims we can make.”
We spend so much time thinking about exercise, nutrition, and performance—but I believe recovery may be one of the most overlooked pieces of longevity. In this episode, I'm joined by Dr. Jason Wersland, chiropractor and founder of Therabody, whose own experience with debilitating pain after a motorcycle accident ultimately led him to invent the Theragun. But this conversation goes far beyond muscle soreness. Jason and I explore what recovery actually means, why it isn't just for athletes, and how the way we regulate our nervous system can influence pain, tension, sleep, performance, and how we feel every day. Whether you're training intensely, sitting at a desk for eight hours, standing all day at work, or simply dealing with chronic stress, your body still needs opportunities to recover. In this episode, you'll learn: • Why recovery should be part of your daily longevity routine—not just something you do after exercise • How the "pain gate theory" helps explain why different forms of stimulation can temporarily change how we perceive pain • Why sitting all day can contribute to hip, lower-back, neck, and shoulder tension • How percussive therapy can affect pain, muscle tension, range of motion, and blood flow • Why nervous system regulation matters for recovery and performance • How shifting into a parasympathetic state may help you wind down before sleep • Why HRV and heart rate can provide useful feedback about recovery • How small "recovery snacks" throughout the day can help you take better care of your body We also discuss massage, breathwork, movement, compression therapy, biofeedback, sleep, and practical ways to build short recovery "pit stops" into even the busiest schedule. One of my biggest takeaways from this conversation is that recovery is not a luxury reserved for professional athletes. Your body is responding to physical, mental, and emotional stress every day. If we want to perform well—and stay healthy for decades—we have to give it opportunities to recover, too. Learn more about Dr. Shah: Website: drshah.com https://drshah.com Clinic: next-health.com https://www.next-health.com/ Instagram: @darshanshahmd and @extend_podcast Learn more about Dr. Jason Wersland: Website: therabody.com https://therabody.com Instagram: @drjasonwersland Thank You to Our Sponsor: IM8: Try IM8 with a 30 day money back guarantee. Get 10% off your first order with code DRSHAH at checkout im8health.com/drshah https://im8health.com/drshah
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