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.