I've had the same issue, Mark.I slept on my side for my whole life up until I a couple years ago when my arm would be completely numb when woke up in the morning. Never thought of the reason for it, but IIRC it started to happen when I got heavier, so that sounds like a logical reason. Eventually I had to learn how to sleep on my back. Its supposed to be better for your posture too.
3/11/14 at 12:38pm