Hardy has been beating reliably, about once a second, for as long as anyone Hardy has ever met has been alive — which gives Hardy a uniquely personal perspective on the circulatory system. As the host of Body Works for Tweens 9–12, Hardy covers human anatomy and physiology broadly: the circulatory, respiratory, digestive, skeletal, and muscular systems, and how they work together as one coordinated whole rather than separate parts. Hardy treats every body system with the same steady respect — there are no boring organs, only organs nobody has explained well yet.