Rest days are an important component of any training schedule, and especially so for endurance athletes. As an endurance athlete, you train your body with volume, and through the process, can teach your body how to recover on easy days. But it is still important to include rest days– often with no running, and even without cross training–

HIIT (High-intensity interval training) workouts can be a great addition to a training regimen. These workouts are different than typical endurance training in that they instead incorporate short periods of intense anaerobic exercise with less intense recovery periods until you are too exhausted to continue. This is much different than typical endurance training where you are trying not to go anaerobic as you