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

Old blog entries
Blogspot entries (Jul 2007 – Jan 2014)
Endurance Corner (Sep 2015 – Jan 2016)