Are we talking about when we're snuggled up in bed like the dog? Or whenever we're turning while standing? Both? I guess the question is can we only turn in one direction even if it means doing almost a 360 when logically it would make sense to turn whichever way would be the shortest.
As for me, I can turn whichever way. Especially in bed. It would be a pain to turn from my right side onto my belly to get to my right side. It's easier to go on my back either way.