I don't know, it's all the obvious techniques you'd imagine in lieu of furniture. Whatever is comfortable and practical. The orientations vary, constantly, that's part of the value. When one position becomes tiresome, a reconfiguration occurs.

I'm not a good person to ask about time to adapt, I stopped sleeping in beds as a teen opting for the floor. So I was already pretty well acclimated by the time I decided to get rid of the rest.