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!

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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.

The Development of Physical Power

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