[Aperocky]

> they are widely known to be geniuses or hyper-productive (Nikola Tesla, Elon Musk etc.)

I don't buy this. I don't know life of Nikola Tesla, but the recent activity of Elon Musk might be explained by a serious and chronic lack of sleep.

[Wowfunhappy]

Short Sleepers certainly exist, but they're rare. https://www.ucsf.edu/news/2019/08/415261/after-10-year-searc...

But I've usually heard of them needing ~4 hours of sleep, not 2.

[freedomben]

I had a teacher in high school that was like this. He got a job as a night checker at the grocery store to help pass the time and make a little extra money. He felt great when getting about 4 hours of sleep. He had researched it quite a bit and after talking to a doctor decided to embrace the extra time. I was always jealous.

But yeah I don't buy the 2 hour sleep thing, because according to this teacher it's almost always around 4 hours for people in this boat.

[gbear605]

Nikola Tesla was certainly not for not being entirely sane, so that might be evidence there as well.