Training Nutrition

The history and science of modern endurance fueling.

The most common, performance-defeating nutrition mistakes—and how to fix them

We tried three at-home sweat tests so you don’t have to. Here’s what sweat tests are best, and how to use that information for a running breakthrough.

Common causes and solutions for when it’s hard to eat during a race.

Here are the factors to consider when adapting your race-day nutrition strategy.

In a pinch, these on-the-go eats are nutritious fuel

Disregarding smart nutrition strategies is a surefire way to not reach the finish line. Here are the most effective ways to sabotage your next big race.

How to get to the root of GI problems while running and racing.

Our nutrition expert takes us on a tour of fueling options available at most running specialty stores, and how runners can shop smarter to fuel their races and long runs.

We asked experts how much protein, and what kind runners should be eating, covering vegan to meat-eaters and everyone in between.