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Perhaps one of the reasons he's lived so long is because he has healthy habits like this.

Many people around the world bike at this age. It's true that most of them are not in the USA.

Stay fit people!

Stay fit, people!

Or, maybe all fit people are leaving the US: Stay, fit people!

It’s interesting that he goes to work at all - I assume he could get work from home anytime he wants to.

I guess there are three things he does while working:

* Thinking About maths problems (incl. writing them down, solving) * Teaching students * Discussing problems with researchers.

The first thing he could probably do at home, but having a dedicated thinking place may help. The others are hard to do at home in the same quality for many reasons.

IIRC he gets into his work arrangement to try to finish TAOCP:

https://www.youtube.com/watch?v=2BdBfsXbST8&ab_channel=LexFr...

I don't really like Lex Fridman, but this interview is excellent.