Join

​Train Smarter

Age Stronger

Restore Strength, protect your joints, and move with confidence for life.

JOIN TODAY!

Rooted in Science

Instead of following trends, FIS OnDemand meets you where you are

Experience Pain Free Strength

Activate weak muscles to reduce pain and improve movement. Rebuild lost strength with resistance-based progressions that protect your joints.

THE FIS 5 STEP ISOMETRIC METHOD

Lauren's proven, science-backed system gives you a safe, cyclical roadmap to rebuild strength. Since muscles naturally decline 3–8% per decade after age 30, our training needs structure, progression, and precision. 


Best Content

Activate

Target weaknesses with isolated isometrics that wake up dormant muscles, restore joint positions, and reduce inflammation.
Best Content

Integrate

Improve flexibility through muscle contraction—not stretching—while reducing compensation, enhancing control, and lowering blood pressure.
Best Content

Move

Build control and mobility with bodyweight training, functional Pilates-style core work, and joint-focused movement sessions.
Best Content

Amplify

With added joint control, we can progress to adding load. Train upper, lower, and full body using dumbbells and bands to strengthen muscles.
Best Content

Optimize

Enhance endurance, resilience, and responsiveness for sustained joint longevity with dynamic resisitance training and stability ball work.

What’s Included in Your Membership

FIS OnDemand is a joint-friendly strength platform for adults over 50 who want to stay strong, capable, and confident.

<div class="editor-content"><p><span style="color: #0B0C0C"><strong>On-Demand Workouts</strong></span></p></div>

On-Demand Workouts

Access to 1,000+ joint-safe strength & mobility videos

<div class="editor-content"><p><strong>5-Step Isometric Method™</strong></p></div>

5-Step Isometric Method™

Smart Training to build muscle while protecting joints

<div class="editor-content"><p><strong>Weekly Training Plans &amp; Calendar</strong></p></div>

Weekly Training Plans & Calendar

Guided scheduling with built-in tracking

<div class="editor-content"><p><strong>Member Community</strong></p></div>

Member Community

Ask questions, learn, and connect with others.

<div class="editor-content"><p><strong>Pain, Prehab and Longevity programs</strong></p></div>

Pain, Prehab and Longevity programs

Rebuild after injury or surgery with targeted resistance training

<div class="editor-content"><p><strong>Expert Guidance</strong></p></div>

Expert Guidance

Weekly education and accountability with Lauren

Meet Your Instructor

Lauren Eirk, MS, MAT-Rx, C-IAYT, E-RYT 500, is the owner of Fitness Integrated Science in Kentucky, bringing nearly 40 years of experience in Fitness and Exercise Mechanics. As a Muscle Activation Techniques (MAT) Specialist, Lauren has helped thousands of people to optimize their muscle health.  She created FIS OnDemand, a platform with therapeutic workouts and education for adults over 50, built around her proven Isometric Method™


As an educator to other Health Professionals, Lauren has been known throughout the fitness industry for many decades for the creation of her unique style of Yoga, called Yoga I.S.®, which integrates classical Yoga with the modern science of Biomechanics. Lauren is frequently invited to write and speak for national health and fitness conferences and certification organizations in the fields of resistance training, active aging, biomechanics, injury prevention, muscle maintenance, and joint health.

Best Content
Best Content
Best Content

Watch Anytime Anywhere

Accessible on all devices including iOS and Roku.

example of our mobile apps tv with player
example of our mobile apps phone horizontally
apple tv device gray remote

START YOUR MEMBERSHIP TODAY

Experience pain-free strength with safe, science-based workouts. Train at your own pace and stay strong for life.  Enjoy your membership by clicking on the plan that suits you best.

MONTHLY

Full access to the entire FIS OnDemand library for $19.99/month. Cancel anytime.

Only $19.99/month

ANNUAL

Save 33% when you commit to a full year — just $13/month, billed annually (regularly $19.99/month)

$159.99/year

Testimonials

Nothing like it! You will never find another app that you can use for Fitness And rehab rehabilitation for any injury or pain you have. Too many people just want a pill to make them feel better in their body, but you actually need to move properly and functionally. Lauren Eirk is the most forward thinking fitness expert I’ve ever met and trained with. She really cares about what she’s teaching to truly help people. Everything she says, and does is back by research and science and years of experience.

Beth Kurtz

iOS 

In my 50s and 60s I kept trying to do the same strength training workouts that I did in my 30s and 40s, only to spend more time nursing injuries and I did working out. I experiment it was several different approaches to Fitness And and doing so discovered Lauren Eirk and FIS. After filing Lawrence program, I am pain-free for the first time in 20 years! My body is much more stable, balanced and mobile.

David Horton

iOS

I was introduced to Lauren and her muscle strengthening approach to fitness in December 2018. I suffered with regular crippling lower back strain for 30 years following an injury age 19. No more!!! Having this wonderful app gives me access to lauren‘s meticulously crafted workouts anytime I want to care for my body was specific, intentional movement. I can step onto a mat feeling BLAH and sore from all the sitting I do in my job and after even just a short workout, I feel SO MUCH BETTER! I take Lauren with me when I travel via the FIS OnDemand app since there’s plenty of props/equipment-free workouts in there. I hope lots of people discover Lauren and her intelligent thoughtful approach to Fitness as we age.

Kate Loyd

iOS 

B
D
K

Do you want to stay in the know? Sign Up for our weekly newsletter!

Join our awesome community to receive valuable tips and information to help you stay pain-free