" Before each meal she takes a moment to say hara hachi bu, and that keeps her from eating too much.” “Hara hachi bu?” I repeated. “It’s a Confucian-inspired adage,” Craig chimed in. “All of the old folks say it before they eat. It means ‘Eat until you are 80 percent full. "

― Dan Buettner , The Blue Zones: Lessons for Living Longer From the People Who've Lived the Longest