Interval training involves high-intensity periods of work followed by lower intensity periods of work or rest that are repeated for a specific number of repetitions, determined by the fitness level of ...

In a fartlek run, is there a minimum duration of faster intervals? A fartlek is a continuous run that includes harder efforts, with easy running between them. The number of intervals depends on what ...

Whether you’re a 5 or a 15-minute mile runner, the desire to go faster is in every runner’s DNA. But what’s the best way to add a bit of pace to your game? One answer is to build interval training ...