Stronger Legs. Smarter Training. Fewer Setbacks.

Personalized strength & mobility plans created by a Doctor of Physical Therapy — built to help you run pain-free, stay consistent, and feel strong now and in your 80s.

Trusted by 60K+ runners and rooted in 9 years of clinical experience

Welcome!

Catalyst Strength Club gives you a personalized strength and mobility plan each month, built by a Doctor of Physical Therapy.


Based on your goals, schedule, and science-backed assessment, you’ll get workouts tailored to what your body actually needs - not a one-size-fits-all plan.

Cancel anytime - no long-term commitment.

What Makes This Different Than All The Free Plans Out There?

Complete a strength & mobility assessment from home — no equipment or appointments needed.

Your results are analyzed by a Doctor of Physical Therapy using the latest running research.

Every movement is chosen for your needs. No filler. No guessing.

You’ll get 6–12 key exercises weekly — so you always know what to do and why.

Do your workouts on rest days or cross-training days — they’re designed to fit your running schedule.

Workouts evolve with your feedback and results to keep you strong, balanced, and consistent.

How Catalyst Strength Club Works

Your Path to Stronger, More Confident Running

Step 1: Assess & Simplify

Upon joining, you'll complete a 15–20 minute strength and mobility assessment from the comfort of your home.

Alongside this, you'll provide insights into your goals and schedule.

Dr. Matthews will analyze your inputs to craft a straightforward, science-backed plan tailored to your needs.

Step 2: Strength & Consistency

Within a week of submitting your assessment, you’ll receive personalized workouts designed to align with your body, goals, and time constraints.

Each exercise is chosen for you by a Dr. Matthews and delivered via a user-friendly app, which includes video demonstrations to ensure proper form.

Step 3: Expert Progression

Each month, you’ll have the option to share how your training is going — and depending on your membership tier, you’ll receive varying levels of support:

No matter your tier, your program progresses with you — so you’re never stuck wondering what to exercises to do next to keep seeing progress and gaining strength.

No Fluff. No Guesswork. Here’s What’s Included:

✔ Custom strength + mobility program based on YOUR assessment results
✔ Monthly program updates and progressions
✔ Video demonstrations for every exercise
✔ Access to an easy-to-use mobile app
🔁 Optional form feedback + guidance (Momentum+ and Premium only)

Meet Your Coach, Dr. Chelsea Matthews

I’m a Doctor of Physical Therapy who’s spent the last 9 years helping runners of all levels - from Olympic hopefuls to 83-year-olds - stay strong, injury-free, and confident in their training.

I have credentials, but my real “schooling” came from this…

I had an injury and chronic pain that made me question if I’d ever run again. Rebuilding my strength wasn’t just physical. It helped me reclaim my identity, my mental health, and my joy.

Now, I bring that same science-backed, whole-person approach to the Catalyst Strength Club: a program that fuses clinical precision with real-life experience to help you keep running now and long into your golden years.

You can read more about my background here.

Who is this for?

✅ For:

  • Runners ages 35-70 who want to feel strong and confident

  • Athletes juggling work, family, and training who are tired of guessing what to do

  • Those with nagging aches or past injuries who want preventative guidance

  • Runners who want a science-backed strength plan tailored to their body, goals, and schedule

❌ Not For:

  • Runners looking for heavy hypertrophy lifting or in the middle of a current injury flare

  • Anyone unwilling to commit 30 minutes, 2x/week to strength training

  • People needing live 1-on-1 coaching or race-specific performance prep (this falls under my private coaching linked here)

What Will Your Exercises Focus On and Why?

These aren’t generic exercises. They’re designed with the latest running, injury and longevity science in mind.

Reduce Injury Risk

  • Reduced knee pain risk

  • Reduced muscle strain risk

  • Improved tendon health

  • Reduced ankle sprain risk

Improve Performance

  • Improves running economy

  • Feel stronger with hills

  • Improves power with running

  • Improves tendon spring

Support Longevity

  • Offset age-related strength loss

  • Offset age-related tendon changes

  • Improved quality of life with aging

  • Improved bone density

What current members are saying…

  • While I had been a regular gym-goer, I was doing mostly classes. I thought it was enough--I assumed I was working on all the key muscle groups...until my knees and hips started to hurt. I thought "How can I workout this much and still have pain??" Turns out I was doing too many things that weren't adding any value. With your custom program, I know that every exercise is prioritized to my exact needs - There's no fluff. I actually spend less time in the gym now, and I am seeing significant progress.

    Amelia

  • I hadn't run AT ALL since I had my first child 4 years ago, and with this program , my long runs are at 7 miles already with NO PAIN. An absolute dream come true! Chelsea has truly changed my life and I'm a full-time believer in her methodology.

    Allie

  • This has made such difference and has truly been a godsend to help me on my path to recovery from knee pain.

    Amy

  • I injured my right ankle in July and haven't walked pain free since then. Since I started this program I have zero ankle pain.

    Ashley

Find the Right Tier for Your Running Goals

Whether you’re looking for a solid plan or high-touch coaching, there are 3 flexible options to support your strength, mobility and long-term health and performance.

Momentum Tier

$49

per month

Includes:

  • Strength and mobility assessment results analyzed by a Doctor of Physical Therapy

  • Monthly workout updates tailored to your goals

Momentum+ Tier

$95

per month

Includes everything in Momentum, plus:

  • Monthly feedback form to ask questions and get answers from Dr. Chelsea

  • Monthly form review to ensure you’re getting to most out of each exercise

Premium Tier

$250

per month

Includes everything in Momentum+, plus:

  • Weekly form review

  • Weekly workout adjustments

  • Weekly text (or WhatsApp) check-ins with Dr. Chelsea for support

Frequently Asked Questions

  • Catalyst Strength Club is designed for runners of all levels. The exercises chosen for you are based on your strength, mobility and goals. Regardless if you’re running 1 mile or an ultramarathon - you’ll find the right level of challenge inside your workouts.

  • When you sign-up, you’ll share your weekly time constraints, and your workouts will be created around this. Members spend anywhere from 1-3 hours a week on their programs. A minimum of 1 hour per week is required to see results.

  • Every workout is customized based on your unique needs and goals utilizing the latest science and research around strength, prevention and longevity.

    For example, while many online workouts will feel challenging - this doesn’t mean they are actually improving strength or reducing your injury risk as a runner.

    In fact, the wrong type of workouts can actually leave you more susceptible to unnecessary pain, fatigue or injury. This is why having expert guidance can make all the difference.

  • Yes. Catalyst Strength Club is a monthly membership but you can cancel or pause anytime. No long term commitment is needed. For me, strength training is a part of being a healthy runner. I have been strength training regularly for 22 years.

  • It’s recommended that you have resistance bands and either dumbells or kettlebells to get the most out of the program.

  • Some tiers include email and text communication but Zoom sessions are reserved for private coaching clients. My availability for this is very limited and you can learn more here.

  • Most members report feeling stronger and more confident in their movements within 2 months.

  • Your exercises are delivered through a user-friendly app (included with your membership) available for iOS and Android. Each exercise includes a demonstration video, form cues, and the ability to track your progress. While you can leave comments in the app, please use the monthly feedback form for questions requiring responses.

You Deserve to Run Strong Now and In Your 80s

Join Catalyst Strength Club and take the guesswork out of building strength and mobility. With a personalized plan and expert support, you’ll feel strong, confident and ready to tackle any goal you can dream up.

I'm confident you'll love the clarity and results from Catalyst Strength Club . If you're not completely satisfied after your first month, let me know and I'll refund you.

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