If your schedule’s packed and you only have a limited amount of time to exercise, don’t give up on your workout altogether.  You can boost your energy level, improve your aerobic capacity and burn fat in as little as half an hour.  The trick? Interval training, where you alternate between a period of heart-pounding cardio and a long recovery period.

Performing high-intensity sprints will wake up your body and give you more energy for the day ahead.  In the long-term, it will raise your metabolism, helping your body burn calories more efficiently even when you’re not exercising.

So let’s get started!