it is easy to read, the science is right, and if one follows Henry Lodge’s and Chris Crowley’s recommendations, both mental and physical aging can be delayed. I wish my patients would follow their advice.”— K. Craig Kent, M.D., chief of vascular surgery, New York–Presbyterian Hospital

Science proves that we can turn back our biological clocks through exercise. This is the guide that not only shows you how to start an exercise regimen, but also provides the motivation and know-how to keep it going for life.