The Strength Running Podcast

Jonah Rosner is an applied sport scientist who spent 10 years working with athletes and teams from all major American professional team sports, particularly the National Football League. 

He's a certified running coach and strength and conditioning specialist and he previously partnered with Nike to run the Nike Running Performance Lab in New York City. You can sign up for his Marathon Science newsletter here.

Jonah was also the sport scientist on hand during a fitness retreat I attended last year where I had my VO2 Max measured. Jonah administered the test, which you can watch on Strength Running's YouTube channel.

In this conversation, we myth-bust around the hottest topics in running: 

• Heat training
• How to develop better running economy
• Heart rate Zones
• Why beginners shouldn't worry about Zone 2
• Overpronation
• Electrolytes and sodium consumption

If you like this episode, be sure to listen to Facts vs. Fads: Dr. Nick Tiller on Nasal Strips, Organics, Cupping, Detox Diets, & More.

Thank you Previnex!

After resisting most supplements for the better part of my life, I'm cautiously changing my tune. I'm now a Masters runner and in my personal life, I'm optimizing for longevity. I want to be my healthiest self for as long as possible and I'm excited to partner with Previnex to make that happen.

Previnex uses the most bioavailable, clinically tested ingredients, the optimal form and dose of each ingredient, pharmaceutical grade manufacturing, testing of raw ingredients and finished products. For every purchase you make, they also donate vitamins to kids in need.

Their new Muscle Health Plus is something I'm now taking. Turning 40 – and having a thin frame – has made me realize that I need to prioritize lean muscle mass to stay healthy and age well. Muscle Health Plus has creatine, essential and branched chain amino acids, and it's designed in a way to maximize protein synthesis and the absorption of amino acids.

Muscle Health Plus will help you prevent muscle damage, which is particularly important for aging runners who want to protect themselves from muscle loss and recover faster after hard workouts. As is true for all of their products, Previnex adheres to the highest of standards: their ingredients are clinically proven to do what they say they're going to do.

They're now offering international shipping so if you live in the UK, Canada, Australia, or anywhere around the world, you can try Previnex as well.

Previnex offers a 30-day money back guarantee. If you don't feel the benefits of their product, you get your money back no questions asked. With their focus on quality and customer satisfaction, I hope you'll try it!

Use code jason15 for 15% off your first order at Previnex!

Thank you LMNT!

A big thanks to LMNT for their support of this episode! They make electrolyte drinks for athletes and low-carb folks with no sugar, artificial ingredients, or colors. They are offering a free gift with your purchase at LMNT. And this does NOT have to be your first purchase. You'll get a sample pack with every flavor so you can try them all before deciding what you like best.

And BIG news! Their newest flavor is now permanently available : LEMONADE SALT!

LMNT's products have some of the highest sodium concentrations that you can find. Anybody who runs a lot knows that sodium, as well as other electrolytes like magnesium and potassium, are essential to our performance and how we feel throughout the day.

If you're not familiar, LMNT is my favorite way to hydrate. They make electrolytes for athletes and low-carb folks with no Sugar, artificial ingredients, or colors. I'm now in the habit of giving away boxes of LMNT at group runs around Denver and Boulder and everyone loves this stuff.

Boost your performance and your recovery with LMNT. They're the exclusive hydration partner to Team USA Weightlifting and quite a few professional baseball, hockey, and basketball teams are on regular subscriptions. So check out LMNT to get a free sampler pack and get your hydration optimized for the upcoming season.

Elisabeth Scott is a USATF, RRCA, and UESCA certified running coach and the host of the enormously popular Running Explained Podcast.

She and Jason are answering questions from Jason's Instagram about:

• Optimal ratio of hard to easy mileage
• Physiological benefits of moderate paced running
• Helpful cues to ensure you're truly running easy
• How you figure out your training paces

Elisabeth is an authentic and powerful force in the running community and I hope you use her startegic advice in your training. 

Thank you 2Before!

We are supported by 2Before, a powerful sports supplement made from New Zealand Blackcurrant berries designed to increase endurance, manage inflammation, support immunity, and promote adaptation. 2Before helps to boost performance by increasing blood flow, making it more efficient for the body to pump oxygenated nutrient-rich blood into the muscles.

Just like beetroot powder but more effective, 2before uses the powerful vasodilation benefits of blackcurrant berries to prime you for hard work. If you're getting ready for a big workout or race, their caffeinated version is a must try! You'll get the oxygen boosting benefits of blackcurrants, plus the performance benefits of caffeine.

So, if you want to try to boost your performance and immune system, use code JASON for 30% off 20 packs and multi-serve packs at 2Before.com.

Thank you to 2Before for supporting Strength Running!

Thank you Gut & Green!

Previnex's new Gut & Green Superfoods powder is my new go-to. It has organic barley and oat grass, alfalfa, spirulina, chlorella, kale and broccoli… and that's it. Simplicity is powerful and Gut & Green delivers on what I care most about: doing one thing really well.

Their ingredients are backed by clinical data and contain three specific gut fibers that help promote GI health, digestion, reduced inflammation, and a better microbiome. As someone who doesn't always eat all of their vegetables, this is important to me.

With twice of the fiber of my last greens mix and a better flavor, it's a no brainer. Gut & Green Superfoods is like insurance against my diet (which isn't always as good as it should be) so I can feel my best throughout the day.

Try it for yourself here at previnex.com and be sure to use code "JASONGREENS" to save 15% off your first order. Don't tell anyone, but if you put Gut & Green Superfoods powder in your cart, then the 15% off discount will work for anything else you add into your cart as well. Thanks Gut & Green!

Thanks to The Performance Training Journal!

The Performance Training Journal is now available on Amazon and debuted as the #4 new release in the running category. Since I started running in 1998, I've kept a hardcopy training journal. Holding a tangible log, writing in it daily, and reflecting on the ups and downs of running is a surefire way to improve. 

This hardcopy training journal helps you focus on the training metrics that matter, prioritizes a long-term outlook so you don't take any shortcuts, and maintains your motivation with strategic self-praise. With a no-frills, functional design, the Performance Training Journal includes coaching advice on racing, injury prevention, strength training, and more. It will guide you through race scheduling, how to plan your race morning, the best workouts for endurance runners, and encourage you to track your personal bests over time. 

You have the space to make this journal your own whether you're a new runner or a professional, a trail or road runner, or a mid-distance specialist or ultra marathoner.⁣ So don't just track your running, learn from it with the Performance Training Journal! Check it out today on Amazon.

Floris Gierman is a 2:44 marathoner, cofounder of Path Projects, 100-mile ultramarathon finisher, and author of the new book Running Breakthroughs. 

He's done something rare: interview the world's best runners (like Eliud Kipchoge, Courtney Dauwalter, and Killian Jornet) and put all the best lessons, insights, and wisdom into his new book. You'll learn what keeps the most competitive runners going, how they train, and their best advice to excel. Pick up your copy here.

I wanted to know:

• What has he learned from hundreds of conversations with such amazing athletes?
• What sets them apart? What makes them similar to us?
• From all he's learned, what would he recommend are the most important pieces of advice for a new runner? What about an experienced, advanced runner?  

We're going to discus what he's changed his mind about, what's been most surprising, and who he's learned the most from.

You can also watch this conversation on the Strength Running YouTube channel here.

Thank you Previnex!

After resisting most supplements for the better part of my life, I'm cautiously changing my tune. I'm now a Masters runner and in my personal life, I'm optimizing for longevity. I want to be my healthiest self for as long as possible and I'm excited to partner with Previnex to make that happen.

Previnex uses the most bioavailable, clinically tested ingredients, the optimal form and dose of each ingredient, pharmaceutical grade manufacturing, testing of raw ingredients and finished products. For every purchase you make, they also donate vitamins to kids in need.

Their new Muscle Health Plus is something I'm now taking. Turning 40 – and having a thin frame – has made me realize that I need to prioritize lean muscle mass to stay healthy and age well. Muscle Health Plus has creatine, essential and branched chain amino acids, and it's designed in a way to maximize protein synthesis and the absorption of amino acids.

Muscle Health Plus will help you prevent muscle damage, which is particularly important for aging runners who want to protect themselves from muscle loss and recover faster after hard workouts. As is true for all of their products, Previnex adheres to the highest of standards: their ingredients are clinically proven to do what they say they're going to do.

They're now offering international shipping so if you live in the UK, Canada, Australia, or anywhere around the world, you can try Previnex as well.

Previnex offers a 30-day money back guarantee. If you don't feel the benefits of their product, you get your money back no questions asked. With their focus on quality and customer satisfaction, I hope you'll try it!

Use code jason15 for 15% off your first order at Previnex!

Thank you LMNT!

A big thanks to LMNT for their support of this episode! They make electrolyte drinks for athletes and low-carb folks with no sugar, artificial ingredients, or colors. They are offering a free gift with your purchase at LMNT. And this does NOT have to be your first purchase. You'll get a sample pack with every flavor so you can try them all before deciding what you like best.

And BIG news! Their newest flavor is now permanently available : LEMONADE SALT!

LMNT's products have some of the highest sodium concentrations that you can find. Anybody who runs a lot knows that sodium, as well as other electrolytes like magnesium and potassium, are essential to our performance and how we feel throughout the day.

If you're not familiar, LMNT is my favorite way to hydrate. They make electrolytes for athletes and low-carb folks with no Sugar, artificial ingredients, or colors. I'm now in the habit of giving away boxes of LMNT at group runs around Denver and Boulder and everyone loves this stuff.

Boost your performance and your recovery with LMNT. They're the exclusive hydration partner to Team USA Weightlifting and quite a few professional baseball, hockey, and basketball teams are on regular subscriptions. So check out LMNT to get a free sampler pack and get your hydration optimized for the upcoming season.

How did we transition from a society with no "sports" or competition, to one where they're ubiquitous?

Learn the history of the fitness industry: how weightlifting and running emerged, early versions of equipment, how people trained 200+ years ago, and more. Dr. Conor Heffernan explores the main themes from his book, When Fitness Went Global.

If you like history and training, you're going to love this episode!

Thank you 2Before!

We are supported by 2Before, a powerful sports supplement made from New Zealand Blackcurrant berries designed to increase endurance, manage inflammation, support immunity, and promote adaptation. 2Before helps to boost performance by increasing blood flow, making it more efficient for the body to pump oxygenated nutrient-rich blood into the muscles.

Just like beetroot powder but more effective, 2before uses the powerful vasodilation benefits of blackcurrant berries to prime you for hard work. If you're getting ready for a big workout or race, their caffeinated version is a must try! You'll get the oxygen boosting benefits of blackcurrants, plus the performance benefits of caffeine.

So, if you want to try to boost your performance and immune system, use code JASON for 30% off 20 packs and multi-serve packs at 2Before.com.

Thank you to 2Before for supporting Strength Running!

Thank you Previnex!

Until November 30th, Previnex is celebrating Black Friday with 30% off. That's double the normal discount and you don't even need to use a code. Just go to previnex.com, take advantage of the big savings, now with international shipping available!

After resisting most supplements for the better part of my life, I know as a Masters runner that I need to be my healthiest self for as long as possible. I'm excited to partner with Previnex to make that happen.

Previnex is different: they use the most bioavailable, clinically tested ingredients, the optimal form and dose of each ingredient, pharmaceutical grade manufacturing, and testing of raw ingredients AND finished products. For every purchase you make, they also donate vitamins to kids in need.

Their new Muscle Health Plus is something I'm now taking (as well as Joint Health+). Turning 40 – and having a thin frame – has made me realize that I need to prioritize lean muscle mass to stay healthy and age well. Muscle Health Plus has creatine, essential and branched chain amino acids, and it's designed in a way to maximize protein synthesis and the absorption of amino acids.

Muscle Health Plus will help you prevent muscle damage, which is particularly important for aging runners who want to protect themselves from muscle loss and recover faster after hard workouts. As is true for all of their products, Previnex adheres to the highest of standards: their ingredients are clinically proven to do what they say they're going to do.

They're now offering international shipping so if you live in the UK, Canada, Australia, or anywhere around the world, you can try Previnex as well!

Previnex offers a 30-day money back guarantee. If you don't feel the benefits of their product, you get your money back no questions asked. With their focus on quality and customer satisfaction, I hope you'll try it!

Take advantage of their Black Friday offer at Previnex or use code jason15 for 15% off if you're listening after November 30, 2025.

Listen in on a Team Strength Running coaching call, where Jason takes questions from the community about training, long runs, workout strategy, and more. 

To join one of these calls, join the team here. 

We discuss: 

• Long run strategy (related podcast with David Roche!)
• The value of lifting heavy weights (start here)
• How to balance speed and mileage 

Thank you for listening and supporting the podcast!

Thank You Lever!

I'm excited to partner with Lever - a bodyweight support system that helps you run further or faster with less effort and injury risk.  

You've probably seen pro runners using Lever - it attaches to any treadmill and you hook into it like a harness. It effectively makes you lighter, enabling you to run more volume than you normally could with reduced injury risk, run faster with less effort, or return to running after an injury more effectively.

Lever allows you to do more running with less risk. From building mileage, introducing faster workouts, aiding your return to running after a break, Lever has a place in every phase of training. The pro's have been using Lever for years, giving them the advantage of more training with fewer injuries.

They're also common in physical therapy offices. Because you can run with less body weight, you can gain fitness and practice good technique without risking your recovery.

Go to levermovement.com and use code Strength20 for 20% off any system (and that's with a capital S). If you're injury-prone or are looking to take a big swing at your goals this year, now is the time for Lever. That's levermovement.com with code Strength20 for 20% off any system.

Thank you LMNT!

A big thanks to LMNT for their support of this episode! They make electrolytes with some of the highest sodium levels you can find. With 1000mg per serving, they help replenish what's lost when you're going long.

There's also no sugar, artificial ingredients, or colors. They are offering a free gift with your purchase at LMNT. And this does NOT have to be your first purchase. You'll get a sample pack with every flavor so you can try them all before deciding what you like best.

And BIG news! Their newest flavor is now permanently available : LEMONADE SALT!

I'm now in the habit of giving away boxes of LMNT at group runs around Denver and Boulder and everyone loves this stuff. I'm like a Salt Fairy.

If you haven't tried it yet, you have to give it a chance. For performance and recovery, try any flavor and get a free sample pack to try everything on this page.