Training using movements specific to your sport or daily activities.

Functional training centres around working the muscles of your core first and extremities second.

For example, this man pulling the cable appears to be using his arms and shoulders as the primary force -- when in actual fact, it is his core that is initiating the activity. The chest back and legs are the stabilizers, but the power is in the abdominals -- a workout from the inside out.

This exercise with variations can improve your golf swing, tennis serve or any other sporting activity which requires similar movement.