“The word aerobic, quite literally, refers to exercise with oxygen,” Juli Benson, Olympian and run coach, previously told ...

An aspect of marathon training that’s undebatable: tackling long runs. But the question of how far your longest training run should be lingers in the minds of many marathoners, and it turns out the ...

Easy running, by definition, should feel easy. But as any runner knows, those long, slow runs can sometimes be the most difficult of a training program—both mentally and physically. Some good news: ...

A VO2 max test measures heart health and breaks down your ideal cardio zones for burning fat and building muscle.