Sometimes I wonder if humans need more variability in sleeping positions. Animals sleep in all sorts of positions on all manners of not perfectly even terrain,

Sometimes I wonder if humans need more variability in sleeping positions. Animals sleep in all sorts of positions on all manners of not perfectly even terrain, probably trains nassal to be strong in different orientations. When I had bad heartburn/gerd I'd pass out propped up on the couch or setup a bunch of cushions in the corner of the room, or raise head of my bed up with a few books and getting great sleeps.