A ground-breaking guide to understanding how aging happens in our cells and how to maintain and repair those cells—and roll back joint pain and muscle loss at any age—through gentle, scientifically designed workouts based on Classical Stretch and Essentrics, developed by the author and star of PBS's Classical Stretch series. It's never too late to slow down, or even reverse, the effects of aging. The human body is designed to function for the full length of its life—and with gentle, full-body flexibility and strengthening exercises we can look and feel tremendous, vibrant and active at any age, and well into our senior years. After all, the body is the world's most efficient self-healing machine. And yet, remarkably, many of us neglect the single most important system in the body—the one that makes all the others work—the muscular system. The typical message we get as we age is that we can move less and should take it easy—exactly the wrong advice. Surprisingly, fitness enthusiasts often do as much harm to their bodies as people living sedentary lives. For example, yoga instructors get tennis elbow or carpal tunnel syndrome from daily stress on wrists and elbows; Pilates instructors suffer pectoral and tricep muscle atrophy and even professional athletes grow overweight and suffer countless ACL, meniscus and disc injuries. Ligaments are virtually ignored by most exercises routines and yet joint health is essential in order to remain active. But these afflictions don't happen overnight, and with Aging Backwards we can slow or prevent their onset, and often reverse their symptoms.