Like many in Silicon Valley’s elite, Jack Dorsey has adopted some diet, exercise, and lifestyle routines that seem rather extreme, or even bizarre. The CEO and co-founder of both Twitter and Square recently shared his full lifestyle routine on author Ben Greenfield's Podcast,
and in addition to two hours a day of meditation and kicking off his day with an ice bath, he described his eating habits in some detail. He eats only one meal a day on weekdays, and he told Greenfield he’s done several “extended fasts” where he only drinks water on the weekends:

Also, in his statment,
"I’ll go from Friday ’til Sunday. I won’t have dinner on Friday. I won’t have dinner or any meal on Saturday. And the first time I’ll eat will be Sunday evening. I’ve done that three times now where I do [an] extended fast where I’m just drinking water…The first time I did it, like day three, I felt like I was hallucinating. It was a weird state to be in.

According to him, the only supplements he takes are 'a multivitamin and a lot of vitamin C' at dinnertime.

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