Experts share the best types of interval training to help you improve both as a long-distance runner and an all-around athlete.

There’s a lot of talk in the exercise world about high intensity interval training (HIIT) lately, which is exactly what it sounds like — alternating episodes of exercise with periods of less intensive ...

Eight weeks of HIIT increases both the number and efficiency of muscle mitochondria by expanding their energy-producing inner membranes.

A typical Tabata workout consists of 8 rounds of 20 seconds of maximum effort exercise followed by 10 seconds of rest. This ...

Lungs burning, legs ceasing up – no one actually enjoys interval training. Pushing through the pain is the only way to unlock faster PBs and achieve a higher level of fitness ...