Outlive: The Science and Art of Longevity, Attia

                      A Stanford trained cancer surgeon has turned his focus to longevity and fighting the Four Horsemen: heart disease, cancer, neurodegenerative disease, and type 2 diabetes.  His goal is "to create an actionable operating manual for the practice of longevity." The focus is on  healthspan, a potentially longer life, but one without cognitive, physical, and emotional decline. The four keys are exercise, nutrition, sleep, and social involvement. I skipped the science and focused on personal take-aways.