I go to sleep the same way every night. I start on my right side and, just as I am drifting off, I roll to my left side. I don’t know why I do this, I just always do. 

Like me, most of us have a favorite sleeping position and rarely give it much thought.  If I wake up during the night, I’m always on my side. Generally, however, in the morning I wake up on my back and have no idea how or when I got there. 

From time to time, I have looked up whether sleeping on my side has any health benefits. But I have never found a definitive answer.

What position do you sleep in and why?