The Run Rx
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Personal training, gait analysis, & performance physical therapy for the modern athlete
Boston’s best physical therapy and personal training for runners and active individuals who want to stay strong, injury-free, and performing their best. At The Run Rx, our Doctors of Physical Therapy deliver one-on-one, personalized care and training to help you move confidently, stay healthy, and love every mile.
09/30/2026
Your next mile starts here.
Sometimes the biggest thing standing between you and your running goals isn’t effort — it’s knowing what actually needs your attention.
Maybe it’s an injury that won’t fully settle. A training cycle that keeps getting interrupted. Or simply knowing there’s another level you want to reach.
That’s where we come in. Expert eyes, individualized care, and a plan that makes sense for your body and your running.
📍Somerville, MA
🔗 Ready for your next mile? Get in touch at the link in bio.
09/29/2026
RUNNING DOESN'T BUILD BONE THE WAY YOU THINK IT DOES.
Running is high impact, so it should make your bones stronger. That's what almost every runner assumes.
But bone stops responding after about 20 to 40 impacts. A single mile is roughly 1,500 foot contacts per leg. The load keeps coming long after the signal to rebuild has switched off.
Inside:
→ the 4 things bone actually responds to
→ why box jumps aren't the bone builder you think
→ why plyometrics belong before your run, not after
→ why pain free doesn't mean your bone is healed
🔗 Click the link in our bio to read the full blog.
Turns out taking care of your body is kinda chic ✨
Getting stronger. Going to PT before something hurts. Taking recovery seriously. And having a team that actually understands runners.
Yeah, we’re into it. 🏃♀️
If you've ever watched a race late — or looked at your own form at the end of a long run — you've probably noticed things change. Runners who looked crisp at mile 3 are reaching, sitting back, heel striking.
The usual read: form is breaking down. Discipline problem.
Research says something more interesting is happening. Most runners drift back toward a heel strike as they fatigue, regardless of how they started the run. It's remarkably consistent — and consistent things in biology usually aren't accidents.
Here's the logic 👇
A shorter, quicker stride with a more forward landing costs energy. Your muscles and tendons are doing the absorption work, and active tissue burns fuel to contract.
Reaching further out shifts some of that job onto passive structures — bone, cartilage, connective tissue. Those don't contract. They absorb for free.
So as capacity runs low, your body starts making trades. It's picking the cheaper option, because at mile 20, cheap matters.
That's not your form falling apart. That's a system managing a budget in real time.
Which reframes the whole question. Instead of "how do I hold my form when I'm tired" — mostly a willpower framing that doesn't work — the better question is: where does my capacity actually run out, and what would it take to push that further down the road?
That's a strength and durability conversation, not a technique one. It's also the more solvable of the two.
Worth noticing on your next long run: what mile does your form start shifting? Not to fix it mid-run — just to know where your ceiling currently sits. 💪
09/23/2026
We’re excited to welcome Dr. Ellie Morrall, DPT to The Run Rx team!
Ellie is a Northeastern University DPT graduate who is passionate about helping runners, athletes, and active individuals return to doing what they love and become stronger, more confident versions of themselves.
As an avid runner herself, Ellie understands the impact running and movement can have on both physical and mental well-being. She loves helping people build strength, confidence, and resilience so they can continue doing the activities that matter most to them.
We can’t wait for Ellie to bring her energy, athletic background, and passion for movement to The Run Rx community!
Fun Facts About Ellie…
📍 Ellie grew up in Hopkinton, NH and is the oldest of three siblings
🥍 She was a two-sport athlete in college, playing soccer and lacrosse
⚽️ She decided she wanted to become a PT after rehabbing an ACL tear in high school
🏃🏼♀️ She has completed one marathon in Hawaii and plans to run many more
☀️ You can usually find her running or walking with her dogs, lifting at the gym, or heading to the beach
🐶 Her family owned an animal rescue while she was growing up!
Join us in welcoming Ellie to The Run Rx team! 👋💙
09/22/2026
More than symptom management.
Feeling better is one thing. Building a body that can keep up with where you want to go is another.
Our work doesn’t end when the pain settles down. We keep building — strength, capacity, confidence, and smarter training habits — so your progress actually holds up when the miles, workouts, and bigger goals return.
Because getting out of pain matters. Staying strong enough for what comes next matters too.
📍 Somerville, MA
🔗 Ready to move beyond the temporary fix? Get in touch at the link in bio.
09/17/2026
Research Translation
Forefoot striking lowers impact — but asks a lot more of your calf and Achilles. Not the move if you've got history there.
A 2022 review of 37 studies found quicker, shorter steps reduce load at the knee and hip, shift foot strike on their own, and don't increase load anywhere at the foot or ankle.
Swipe for the breakdown 🔬
09/16/2026
Stronger runners last longer.
Running asks a lot of your body. The answer isn’t to ask less of it — it’s to build the capacity to handle more.
Strength gives you more than power in the gym. It helps your body tolerate training, adapt to higher demands, and stay resilient through the miles and seasons ahead.
We’re not just interested in your next race. We want to help you keep doing what you love for years to come.
📍 Somerville, MA
🔗 Want to build strength that supports your running? Get in touch at the link in bio.
09/15/2026
If you've ever tried to shorten your stride and land closer to your body, you probably noticed it felt like more work. Most runners take that as a sign they're doing it wrong.
They're not. Here's what's actually happening 👇
A longer, reaching stride quietly offloads a lot of impact onto your passive structures — bone, cartilage, connective tissue. Those don't contract. They don't cost you any energy. They just absorb.
Land closer to your body and that job shifts to your muscles and tendons. Active tissue has to contract to absorb load, and contracting costs energy.
So yes, it's harder. That's not a flaw in the change — that's the whole point of it. You've taken a load off structures that were quietly taking a beating and handed it to tissue that's designed to manage it.
But here's where people get stuck: if you don't have the capacity to sustain that, one of two things happens. You drift back to your old pattern within a mile. Or you hold it and it just stays exhausting.
This is why plyometrics matter more than most runners realize. They train the stretch-shortening cycle — your body's ability to store and return energy through the tendon rather than muscling through every landing. That efficiency is what makes a shorter, quicker stride sustainable instead of expensive.
Plyos aren't the boring prerequisite before the "real" fix. They're what makes the fix hold.
Build the capacity first. Then adjust the mechanics. 💪
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Address
315 Broadway
Somerville, MA
02145
Opening Hours
| Monday | 7am - 7pm |
| Tuesday | 7am - 7pm |
| Wednesday | 7am - 7pm |
| Thursday | 7am - 7pm |
| Friday | 7am - 3pm |
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