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Almost 7 hours of sleep per night is more than sustainable. There are people who can get along with 5 hours of sleep per night without any impact to their health.

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That is assuming that he does just that: working and sleeping. So I guess, the time where he eats and tweet is included in its work hours then.

Thats not terribly far fetched. I eat breakfast and lunch while working. If I had my own office I'd have a treadmill desk too.

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