Jack Dorsey, chief executive officer of Twitter Inc. and Square Inc., speaks during an event. (Photographer: Cole Burston/Bloomberg)
(Bloomberg Businessweek) -- Jack Dorsey eats around 6:30 p.m. each night, a meal typically consisting of meat or fish, greens, berries, chocolate, and a multivitamin, with red wine. For breakfast, he drinks 28 ounces of water. For lunch, he has more water. He’s been known to go entire weekends on water alone.