Twitter CEO Jack Dorsey: I eat seven meals a week, dinner only.

<pre><pre>Twitter CEO Jack Dorsey: I eat seven meals a week, dinner only.

When the CEO and co-founder of Twitter and Square, Jack Dorsey, podcasted his rigorous "wellness" routine in March, he raised his eyebrows.

At the time, he told podcast host Ben Greenfield that intermittent fasting helped him focus and "was a new dimension."

There was an update to his controversial fasting habits on Tuesday.

Nowadays, Dorsey eats "seven meals a week, dinner only," he said in a Wired interview posted on YouTube, which probably means that Dorsey stops eating on weekends.

According to his previous comments, dinner for Dorsey is "a really big meal" consisting of protein like fish, chicken or steak and "lots of green", including arugula or spinach salad, asparagus or Brussels sprouts. "And then I mixed berries for dessert, maybe some dark chocolate," he said in March. (A moderately active man in his early 40s needs an estimated 2,600 calories a day, according to the nutritional guidelines for Americans.)

Although intermittent fasting, where you eat for six to eight hours and eat the rest quickly, has become a trend in Silicon Valley and among celebrities like Terry Crews and Jennifer Aniston, there is not enough human research to determine whether it is sustainable or is healthy in the long term. Experts agree that fasting for more than 12 hours can be dangerous, especially for people with certain health conditions or taking certain medications, according to the National Institutes of Health.

Dorsey also said to Wired that he tries to meditate for two hours a day.

Dorsey practices an ancient form of meditation called "Vipassana" and is "extremely painful and exhausting physical and mental work," he said in 2018.

Vipassana requires people to sit cross-legged for 30 to 45 minutes without moving. "[I]Instead of unconsciously responding to feelings of pain or pleasure, consciously observe that all pain and pleasure are not permanent and will ultimately go away and dissolve, "Dorsey tweeted earlier.

In the past, Dorsey also talked about a one-hour alternation of 15-minute saunas and three-minute ice baths, and told Greenfield that the habit "probably had the greatest impact, only in terms of my feeling, but also of mental clarity." (Some studies suggest that using a sauna regularly can improve your mood, but more research needs to be done into the effects of switching between extreme cold and heat.)

However, Dorsey said to Wired, "I definitely don't do a sauna and ice bath every day."

Dorsey isn't the only tech billionaire who has eccentric eating habits. Apple co-founder Steve Jobs used to fast at times and, according to Walter Isaacson's biography "Steve Jobs", only ate fruit, nuts, seeds and grains. And Microsoft co-founder Bill Gates ate powdered Tang packets in the company's early days because he didn't want to take the time to eat.

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