Interval training may sound more daunting than it appears. However, when you are pressed for time and you want to make the most of a workout, intervals are a great way to challenge the routine. By integrating periods of highs and lows, you work to push your heart rate above a normal zone thus allowing for an EPOC (excess post-exercise oxygen consumption) burn to allow for an increase of calories burned within the next 24-48 hours. You do not need to engage in a true high intensity interval training class, but rather could plan for a 20 min jog with 10 30-second sprints spaced out. Try it!