“Measure what is measurable, and make measurable what is not so.” That quote is attributed to Galileo. But it just as easily could have come from Larry Smarr. “He keeps precise measures of his body’s input (what he eats and drinks) and output (the energy he burns and what he excretes—and yes, that is precisely what it sounds like). He undergoes periodic MRIs, has his blood and stool analyzed frequently, submits to annual colonoscopies, and has had his DNA sequenced.” Even in the age of the quantified self, Larry Smarr stands out as a person who tracks every detail about himself. His body is so well monitored that you can actually walk inside a virtual Larry and take a look around. Larry knows so much about himself that, prior to an operation, he pointed to a spot and said to his surgeon: “You’re the doctor, not me, but I would start cutting here.” Smarr’s efforts are about preserving his own health. But they’re also about a future of medicine when you have access to your own medical data, and you become the CEO of your own health care. And that’s nothing to sneeze at (although, turning your head and coughing is perfectly appropriate). Mark Bowden in The Atlantic: The Man Who Saw Inside Himself.