In this workout I am focusing on my abs, but each exercise that I am doing is also working another major muscle group at the same time. I do 2 minutes of cardio between each exercise and keep my breaks very short - just long enough to take a drink of water. Everyones fitness level is different, so you can either do more or less reps to customize this workout for yourself. If you keep a fast pace, you will find that the momentum will keep you going and keep you strong.