There are two ‘buzzwords’ you may have been hearing around the health community. These are HIIT (High Intensity Interval Training) and LIIS (AKA Long Duration Cardio or Low Intensity Steady State).
HIIT uses a combination of extremely high intensity followed by a period of lower intensity. A runner using HIIT would combine a full out sprints with jogging. A runner using LIIS would run at ⅔ to ¾ of their max speed for a longer period of time. These training methods can be applied to a variety of cardio exercises, not just running.
Both HIIT and LIIS have their fans and critics. Rather than praising one over the other, we’ve decided to simply list the proven benefits of both.