Your body runs on two fuels — fat and carbs — but not in equal measure. Here's how each one works, when your body switches between them and why that matters on race day.
Hypotonic, isotonic, hypertonic — three types of gels, three very different jobs. Here's what sets them apart and which one your gut will thank you for on race day.
Gels or drink mixes — which one wins? Neither. They do completely different jobs. Here's how to use both to build a fuelling plan that actually holds up across 42 kilometres.
Your body can only store enough carbs for 2–3 hours of running. The marathon takes longer than that. Here's why energy gels aren't optional — and how many you actually need.
Feeling good at kilometre 10? That's exactly why you should take your gel now — not later. Here's the science behind fuelling before you need it.
Think of your body as an electrical grid. Electrolytes are what keep the current flowing — here's how.
Caffeine doesn't give you energy like food does. It changes how your brain perceives effort — and that changes everything on race day.