FitnessBlender HIIT Pyramid Workout

Time:  36:54
Equipment needed:  Exercise mat.  Dumbbell, optional.

I really enjoyed this workout today, except for the jumping jacks (which I substituted high knees for), burpees, and mountain climbers.  I find all 3 of those exercises to be killers.  I liked the pyramid aspect of the workout and 15 seconds is the perfect amount of rest time in between each interval.  It allows just enough time to take a breather and a sip of water, if needed.  Go at your own speed, keep proper form, and don't stop until the interval is done.