I am a very hard core napper.
Lot of it comes from having no choice in the past. Lot of the things I did in the past normal sleep was impossible. Naps was all that was available in many cases. Some times for many, many days on end. I have done many weeks in a row with only 3 hours sleep on average, that in two 1.5 hour cat naps. I also worked a lot of situations that required shift work, you learn how to adjust sleep patterns or die.
Ellie is right about like rebooting and healing your OS.
If you look into this subject it can be interesting. The general question of "Why we sleep and how"? There are cases of people who do not sleep at all, there are many animals that do not sleep in the wild. Some animals only nap. Fish sleep in some situations. Tame horses and wild horses sleep different.
You can learn to power sleep.
Dogs have mastered the fine art of snoozing. One theory that is interesting is it was Mother Natures way of getting them out of harm's way once daily needs are taking care of. Some animals sleep during day because their chow cycle is at night. In humans sleep is important in memory. We reduce and repack the prior awake cycle events into a distilled and compact form. A bit like defragging the brain.
Dogs are very interesting study. The old adage they are only interested in three things in life. Eating, fighting and mating is not quite right. They have four R's. Laying down on it and sleeping once firmly embedded. They will only go into deep REM sleep if they feel in a very safe place.
Humans can do similar, folks in very stressful situations sleep different, not completely shutting down certain brain function. Momma's listen for the crying baby, soldiers in combat, sailors at sea. With the proper training and practice, you can turn it on and off like a switch. Folks with a lot programming experience will tend to work and sleep different.
I like the cultures around the Med, where naps are built into daily life. In my old neighborhood during holidays, the Swedes I knew and hung around with would always nap after a very heavy holiday meal.
So the non-nappers are to be considered handicapped. Might be a future government program and they may very well become a protected class. Messing with a non-napper who is cranky might be grounds for a lawsuit and major damages. Future employers on the cutting edge may specify fully qualified nappers only. It is not fully known the effects that cuddling has during napping.
It is also nice to have the right music on during a nap. I never had any luck with the sleep learning deal but that might also work in some peeps.
A good mid day power nap, allows for going to 4 am on C-D, last peep standing wins.
