This tech icon fasts for 16 hours a day — and just launched an app to help others do the same (SFGate)

SFGate discussed how Kevin Rose, cofounder of Digg and a handful of other startups, launched an app called Zero to take the guesswork out of daily fasting. The app references the research of Dr. Valter Longo, director of the USC Longevity Institute and a leading expert on fasting.