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Blown away + MAF/ Zone 2/ Karvonen | Extramilest Show #112

By November 18, 2025No Comments

I’m blown away!

Yesterday, my new book Running Breakthroughs officially launched, and the response has been incredible. So many thoughtful messages, shares, photos, and kind words from around the world – I can’t even describe how grateful I feel.

Runners have already started implementing what they’re learning.

Here are a few early reviews:

If you haven’t grabbed your copy yet, Running Breakthroughs is available now at florisgierman.com with limited-time launch bonuses. These bundles and bonus spots are only available for a few more days!

Now, onto today’s video…

I just released something I think you’ll find really valuable – my deep dive into how to calculate the right personalized heart rate training zone for you, even if you are an outlier.

Here’s the thing:

Getting your zones wrong can derail months of training or even lead to injury and burnout. So I walked through 6 different methods to calculate your personal heart rate zones – from the simplest (talk test, nasal breathing) to the most advanced (lab testing).

Click HERE to watch the video

Here are some of the key moments:

  • ​1:41 – Method 1: The Talk Test (no equipment needed)
  • ​2:40 – John’s first 10K breakthrough using the talk test
  • ​5:29 – Andrew Huberman on nasal breathing for zone accuracy
  • ​6:10 – How Mia dropped 8 minutes off her half marathon using nose breathing
  • ​8:11 – The MAF Method (180 Formula) explained
  • ​9:46 – Michael’s comeback from persistent knee pain
  • ​17:04 – Free HR calculator tool at extramilest.com/hr-calculator
  • ​20:04 – When laboratory testing makes sense
  • ​24:08 – How ultra runner James combines multiple methods

For each method, I show you how to start, who it works best for, troubleshooting tips, plus the pros and cons.

This is actually Chapter 4 from Running Breakthroughs, so if you’ve already grabbed the book, you’ll recognize some of this content. But seeing it broken down step-by-step on video makes it easier to follow along.

► ​CLICK HERE to watch this new video.

► Or listen on Spotify, Apple Podcast or your other favorite podcast platform.

Whether you’re just starting with heart rate training or you’ve been doing it for years, I think you’ll find at least one method here that works better for you.

​

Cheers,

Floris Gierman

P.S. Many runners worldwide have asked where to get the book. Start at florisgierman.com to see all the launch bonuses and bundle options. For single copies or 3-packs in any format, you can order through Amazon worldwide (use this link to get redirected to your local Amazon site (Worldwide): Barnes & Noble (US), or Walmart (US). Your local bookstore in any country should be able to order the book for you if you prefer supporting them (ISBN’s Hardcover: 979-8-9933648-1-0 and Paperback: 979-8-9933648-2-7)

P.P.S. The audiobook is now live on Audible in most countries worldwide, such as US, UK, Canada, Germany, France, Spain, Italy, Netherlands, Japan, India, Australia, Brazil, and Mexico. More countries being added soon. Find the audiobook in your country here.

You can find me, Floris Gierman, here:

Flo

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