Some workouts you are prepared for right from the moment you see them and others kinda sneak up on you and leave you feeling wasted on the floor, wondering why you did not see them coming. Howler is definitely one of the latter. Its Level III workout status is deceptive. Bring your knees up to your waist every time you do High Knees, make sure you land on the ball of the foot each time, pump your arms as you run and go as fast as possible in 40 seconds and you realize that this could easily be a Level IV or Level V workout, especially if you add EC.
Extra Credit: Hold the plank in between high knees every time.