" How you can do it: •  If you belong to a faith, join other members of your faith during annual or weekly fasts. Religious fasts may be easier to adhere to than personal, solo fasts, since they are often reinforced by a social network and moral underpinnings. •  Find a “fast buddy.” It’s easier to fast with a friend. •  Limit food intake to 500 calories every other day to establish a regular fasting program and safely lose weight. With this and any other fasting program, drink six glasses of water daily. •  Try eating only two meals a day: a big late-morning brunch and a second meal at around 5 p.m. "

― Dan Buettner , The Blue Zones Solution: Eating and Living Like the World's Healthiest People