If this description matches your behavior, you're probably a weekend warrior, said Jeffrey Spang, MD, an assistant professor of orthopedics at the University of North Carolina School of Medicine.

Jeffrey Spang, MD, an expert at the University of North Carolina School of Medicine, explains how you can develop a long-term, healthy approach to exercise.

Thank you very much, Sharon Ganyou, President Neil Rudenstein and Angelica Rudenstein, members of the Harvard Corporation Board and Board of Overseers, faculty, students alumnae, distinguished guests.