ALAN COUZENSMaximal. Athletic. Development.
Sports science · Applied to your training

Understand the science.
Become a better athlete.

Explore Alan Couzens’ writing on endurance, physiology and the practice of training—from foundational ideas to tools you can use today.

A guide to the collection

Training insights

Start with the foundations, follow a topic, or put an idea into practice with a calculator.

Start here

Build health. Develop endurance. Discover your potential.

My approach starts with consistent movement, a strong aerobic foundation, and the right training dose for you—supported by strength, recovery, and a life that makes progress sustainable.

Read my coaching philosophy →

Find your individual dose

Quantify your training and learn from your own response rather than copying someone else’s plan.

Explore by topic

Tools & calculators

Practical companions to the articles.

Run power

Estimate equivalent cycling power from your running pace.

Bike pacing

Explore a power-pacing strategy for your race.

Sweat rate

Calculate your individual sweat rate for hot-weather planning.

Browse the full article & tool library →

Complete archives

Substack articles (Dec 2022 – present)

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Old blog entries (Aug 2014 – Jul 2020)
Endurance Corner (Sep 2015 – Jan 2016)

Read the full articles in the restored archive. Dates below are saved archive dates.

Explore the Endurance Corner archive ↗

Earlier EC links
Blogspot entries (Jul 2007 – Jan 2014)

Writing elsewhere

Articles, coaching resources and contributions published elsewhere. Browse by publisher, newest first.

SimpliFaster (May 2019 – Dec 2021)
Triathlete (Jul 2018 – May 2022)
TrainingPeaks (May 2010 – Nov 2016)
Fast Talk Laboratories (Mar 2022 – Nov 2022)
220 Triathlon (Sep 2019)
Triathlete Europe / Competitor (Jul 2013 – Jul 2015)
XTri