The main idea is that you move from one exercise to the next as quickly as possible to keep up your heart rate and build up aerobic endurance.
When you have done this routine for a while you will be able to complete this workout in 20 minutes. If you want to you could add another deck of cards or two.
I recommend that you do your aerobic workouts every other day to improve your health. There is no reason why it could not be done daily if you wanted to.