A friend admired Edison's ability to work through the night, using innovative or unusual alternatives to standard sleep.
Being able to ride through the night is a potentially useful skill on some tours.
If, for example, you are stuck in a large metropolitan area, with expensive hotels (or full ones), and all you want is to sleep for a while, then keep riding... -- if you could just keep riding, skip the sleep, and ride through, until you are out of the cities and into good free camping territory... -- if you had the skills to manage sleep in alternative ways....
The friend who admired Edison's ability to work through the night was able to do it himself. He would go through a little ritual, and then lie down on his couch and sleep for maybe ten or fifteen minutes at a time.
'Cat-napping' and 'power-napping' may be similar.
Some people who are adept at meditation say that they can relax (mentally and physically) enough to get the benefits of sleep, and can reduce their sleep time dramatically.
I've tried a 9-2-9-2-9-2-9-2... sleep pattern. Rather than eight hours each night, I switched to nine hours one night, followed by two hours the next night, and so on. It saves, on average, two and a half hours a day, or over seventeen hours a week.
It worked for quite a while.
There are probably other ways of doing these things.
A close friend used to just do all-nighters whenever she felt like it.
Apparently, there are a few people who can go for years entirely without sleep.
It's an interesting challenge -- to conquer sleep, or to find new ways of dealing with it.