Who knew that two simple letters--an--could make all the difference in triathlon training? Frequently referenced, but often misunderstood, the difference between the terms aerobic and anaerobic seems ...

Hill repeats. Intervals sprints. Heavy lifting. Whether you realize it or not, anaerobic exercise may already play a part in your workouts. And if it doesn’t? Well, it might be time to add this type ...

Think about how you feel doing your 12-3-30 routine on the treadmill versus during a high-intensity interval (HIIT) class. You probably feel like you could maintain that first one for a pretty solid ...

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Throughout my life, I had identified as a long-distance runner, competing in high-school cross-country and working up to half marathons. But looking back, I now realize my running background contains ...