Why Two Athletes at the Same Race Have Completely Different Hydration Needs

Reece Noble

Published on: 06/05/2026

Same distance, same conditions, same finish line — and wildly different sodium requirements. Here's why.

Sweat Testing

How to Build Your Ironman Hydration Plan From Your Sweat Test Results

Reece Noble

Published on: 17/12/2025

A step-by-step guide to translating your sweat data into a leg-by-leg race day plan — from the swim exit to the finish line.

Sweat TestingRace Day