I spent 6 months of my life sleeping outside daily. I got so used to it that I couldn't stand to sleep indoors at all. I also slept with minimal cushioning and no pillow. I couldn't stand having a pillow anymore. It took a lot of adjusting to get used to the regular way again once I returned home. I would sleep outside more often at home now, but my partner would think I was strange plus we get a lot of dew where we live.
You know what would be awesome would be to build a platform in one of our backyard trees and sleep up there once in a while. That would be great.
Female, 5'3", 50, Max squat: 202.5lbs. Max deadlift: 225 x 3.