" The “active couch potato syndrome” is an actual observed scientific phenomenon whereby devoted fitness enthusiasts—who conduct daily workouts but live otherwise inactivity-dominant lifestyles—are not immune to the cellular dysfunction and metabolic disease patterns driven by inactivity. Statistics referenced by James Levine, MD, PhD, a Mayo Clinic researcher, international expert on obesity, and author of Get Up! Why Your Chair is Killing You and What You Can Do About It, "

― Mark Sisson , Primal Endurance: Revolutionize Your Training Approach to Drop Excess Body Fat, Manage Stress, Preserve Health, and Go a Lot Faster!