Blog

Training tips, scientific guides, and expert advice for endurance athletes.

Pyramidal, Polarized, Threshold: Which Training Model?

Compare the 3 main intensity distribution models in endurance sports — and find out which one is backed by the most science.

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Guide8 min

Zone 2: Why It's the Foundation of Your Training

Discover why 80% of your training should be in Zone 2 and how to calculate your personalized Zone 2.

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Cycling6 min

How to Estimate Your FTP Without a Lab Test

3 simple methods to estimate your Functional Threshold Power with a smart trainer or outdoors.

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Science5 min

220 - Age: Why This Formula Is Wrong

The classic max HR formula is inaccurate. Discover more reliable scientific alternatives.

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Guide15 min

Beginner's Guide: How to Start Running the Right Way

Everything you need to know to start running safely: walk-run method, heart rate zones, injury prevention, gear guide, and the incredible benefits of running.

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