Sleeping Habits

I have been wondering why I have shoulder pain while sleeping when I face right or left side of the bed.  A log position usually gives me shoulder pain that will last until morning.  Many people are experiencing shoulder pain during this time when they sleep.  It has been a problem for people sleep when experience shoulder pain.  Some people with hip pain also experience sleep problem, finding the best position to sleep.  My wife that have hip pain having hard time the best position to sleep.   It is hard to sleep when you have shoulder pain to take care.  Massage therapy would really be nice solution for the pain and also promote good sleep.