10. Refuel with the right stuff.
By now you've probably figured out what will get you through those last few miles of pavement, but Kastor offers some guidelines depending on where you're at as a runner. "If you’re running to finish and are able to hold a conversation while running, it’s OK to eat a Clif bar, a Power Bar, or a banana at miles 10-12 and 18-20," he says. "But pure, simple, sugar and pure, simple, carbs in the form of fluid are always better because they go straight to your bloodstream and they are less stressful on the body while running.”
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