We advise that you also purchase the Surfitness Quickstart CD-rom to get you going!!! We developed this program because we were sick and tired of seeing surfers and other water people training like body builders. When you train with an integrated approach, you train for function (how your body moves), not aesthetics. This is a Multidimensional Conditioning(MDC) Program, which means you will train using movements specific to your activity. MDC centers around working the muscles of your core (the area between your shoulders and hips) first and your extremities second. Your core is the center of all your strength and is responsible for initiating any activity. If you have a weak core, you will lack power and strength. By the time you finish this program you will be fit from the inside out and from head to toe!!!