If you are short of time this workout could be just what you are looking for. Everybody can find 20 minutes to burn some calories and raise your heart rate.
If you are more advanced in your training include this short workout at the start of your day, to kick start your metabolism. You can then continue with your normal workout program in the evenings.
Make the routine more intense by trying to push yourself to achieve more repetitions, every time you do it or increase the length of time you do each exercise.