The BJJ Kinstretch Club

Most People Quit Jiu-Jitsu Because of Injuries.

My role is to make sure that doesn't happen.

Two 30-minute sessions per week + individual guidance.
A science-based approach to heal old injuries, prevent new ones, and strengthen one's body for the demands of jiu-jitsu.

Founding Students Offer!

Founding Students Offer – $28/month for lifetime access.

Secure checkout • Cancel anytime

5-Star Rating

""Ethan’s knowledge and technical understanding of the human body is unmatched. He sees things other coaches completely miss." - Pete S.

5-Star Rating

"I struggled with chronic lower back pain for years. Physical therapy didn’t help. After working with Ethan, that all changed. I’m in my 40s but feel like I’m in my 20s again." - D. Saint

5-Star Rating

"My body has never felt so strong and connected. This approach to mobility has changed my entire outlook on training and recovery. " - Richard B

What's Included in your

BJJ Kinstretch Club Membership

Founding Member Bonuses

Limited Time Only

Bonus (Founding Member Perk)

Join now as a founding member to lock in your lowest rate and get early access perks that won’t be available later.

Founding price lock – Your $28/month rate is yours forever (price will increase soon)


Early community access – Get answers faster and connect directly with me before the flood of new members


Priority support – Early members get my full focus as we launch, making this the best time to join

Who Is This Course For?

30+ BJJ enthusiasts who to learn a highly effective, professional grade system of physical enhancement.

Busy practitioners who want short, effective sessions they can follow anytime, anywhere


Hobbyists or competitors who want to protect their joints and stay on the mats consistently


Athletes tired of quick fixes and ready to follow a proven, science-backed mobility system


Anyone coming back from nagging injuries who needs a smarter, safer approach to recovery and movement


Grapplers who value longevity and want to train smarter—not harder—for the long haul

Who Is This Course NOT For?

People looking for a magic pill—this takes consistency and commitment


Those who refuse to invest 30 minutes twice per week to care for their body


Practitioners who only want traditional stretching or yoga (this is joint-specific, science-based training)


Athletes who aren’t willing to learn new techniques or rethink old habits


Anyone expecting results without effort—your body will change if you do the work


Those not serious about longevity in BJJ—this is for people who truly want to stay on the mats for decades

Meet Your Instructor

My name is Ethan Ostermeyer, and helping others strengthen themselves has always been my passion. I discovered the power of fitness and nutrition at a young age, which led me into a career in strength and conditioning and eventually owning my own gym.

Over the past 20+ years, I’ve studied countless systems to protect and improve the body’s resiliency—but nothing has been more impactful than Functional Range Systems (FRS).

In 2014, I tore the labrum in my hip while squatting heavy. A respected sports doctor told me my days of athletic movement were over, and that I’d likely need a hip replacement within 10 years. I refused to accept that. While studying through Joe DeFranco and ONNIT Academy, I discovered Dr. Andreo Spina’s Functional Range Systems—and it changed everything.

This wasn’t typical “stretching.” FRS is science-backed, joint-specific training designed to restore and enhance function and control. Within months, I regained mobility, eliminated pain, and started building strength in my injured hip. Today, that same hip is stronger than ever—the doctor who wrote me off even wanted to run a case study.

In 2018, I was introduced to Brazilian Jiu-Jitsu and immediately saw how essential FRS was for grapplers. After training hundreds of athletes and applying this system for nearly a decade, I’ve seen it prevent injuries, eliminate pain, and help practitioners train longer and harder—without setbacks.

In 2023, I stepped away from my strength and conditioning gym to focus entirely on sharing this approach with the jiu-jitsu community. The BJJ Kinstretch Club is the next step in that mission.

Trust is earned, not given. Let me prove to you that this system is second to none—and help you stay on the mats for decades to come.

Frequently Asked Questions

Do I need to be flexible to start this?

Nope! This program is designed for people who are and aren’t naturally flexible. You’ll build mobility, control, and joint health from the ground up—no splits or pretzel poses required.

I’m already training BJJ several times a week. Will this be too much?

Not at all. The BJJ Kinstretch Club is designed to complement your jiu-jitsu training—not compete with it. The sessions are just two 30-minute follow-along workouts per week and can be done on non-training days or after class.

What equipment do I need?

All sessions are bodyweight only, all that is needed is a towel & chair or couch for leverage. As you progress, you’ll have the option of adding simple tools like bands for extra strength, but they’re never mandatory.

Are the sessions live or pre-recorded?

They’re pre-recorded and on-demand, so you can follow them anytime, from any device. Each week features two brand-new sessions—no repeats, ever.

What if I’ve had past injuries or joint pain?

This program is built with injury prevention and recovery in mind. Each session targets specific joints to restore mobility and control. Of course, if you have a serious or recent injury, you should get cleared by your doctor or physical therapist.

I’m busy—what if I miss a session?

No problem. The sessions are short, flexible, and always available on-demand. If you miss one, you can catch up later or stack it with your next session.

Can beginners join, or is this for advanced grapplers?

It’s perfect for all levels. Whether you’re a white belt just starting out or a seasoned black belt, the principles of joint health and mobility apply to everyone.

Can I cancel anytime?

Yes! There’s no contract. Stay as long as you’re getting value—cancel anytime with a single click.

What’s included when I join?

You’ll get:

Core Package: What You Get Every Week

Two 30-minute online guided sessions — follow-along Functional Range Conditioning classes (on-demand, no repeats) designed to bulletproof your range of motion.

The 10 Foundational C.A.R.s — in your first week, you’ll master the 10 Controlled Articular Rotations that do more for your long-term range of motion health than any other set of exercises.

Extra resiliency finishers — optional 2–3 banded or sandbag drills at the end of class to strengthen and expand your ranges of motion even further.

Bonuses (Included Free)

Bonus Lessons — student-driven topics covering weight lifting, mobility, strength, conditioning, recovery, and other strategies to protect your physical longevity.

Private Community Access — accountability, support, and daily answers to your questions about injuries, pain points, balancing strength, mobility, and Jiu-Jitsu.

Monthly Live Q&A Sessions — direct access to me, so you’re never left guessing about your off the mat training.


No hidden fees. No contracts. Cancel anytime.

Is there a guarantee?

Absolutely. Try the BJJ Kinstretch Club risk-free. If you’re not feeling the benefits within 7 days, email us and we’ll refund you—no questions asked.

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DISCLAIMER: The sales figures stated on this landing page and discussed in the BJJ Kinstretch Club are our personal sales figures and in some cases the sales figures of previous or existing clients. Please understand these results are not typical. We’re not implying you’ll duplicate them (or do anything for that matter). The average person who buys “how to” information gets little to no results. We’re using these references for example purposes only. Your results will vary and depend on many factors including but not limited to your background, experience, and work ethic. All business entails risk as well as massive and consistent effort and action. If you’re not willing to accept that, please DO NOT PURCHASE The BJJ Kinstretch Club Membership.