Jack Dorsey
Co-founder of Twitter and Block
Jack Dorsey co-founded Twitter in 2006 and the payments company Square, now Block, in 2009, and served as chief executive of both. He has spoken publicly about his personal routines, including eating one meal a day, fasting, meditation, ice baths and sauna. He left Twitter's board in 2022 and has since backed decentralized social media and Bitcoin projects.
Updated November 1, 2026 · 1 experiment · cited in 1 guide
What Jack Dorsey has tried
1 experiment we can source: 1 kept. Trying something is not recommending it; each entry says which.
Kept
One meal a day (OMAD)Diets and fasting
Dates not stated · Does not recommend it to others
Eats only dinner, saying it makes him more focused during the day; by January 2020 he described seven meals a week, all dinners, after earlier skipping food on weekends too.
“seven meals every week, just dinner”
CNBC, Twitter CEO Jack Dorsey fasting diet includes seven meals a week (January 2020) · Status checked January 15, 2020 · Suggest a correction
Where our guides cite Jack Dorsey
Their public positions, summarized in our words. Follow each link for the full context.
OMAD (one meal a day)Follow it
Said on the Ben Greenfield Fitness podcast that he eats one meal a day on weekdays, typically protein with green vegetables and berries or dark chocolate, and sometimes goes three days on water only.