After 22 years, Floyd and I tried switching sides of the bed. What amazes me is that we've been in the habit of me being on the left and him on the right for so long despite the fact that when either of us writes in bed our arms block the bedside lamps because I'm right-handed and he's left. It makes me feel profoundly stupid that we've never noticed.
Intriguingly, the dog switched, too. The result: for the last two nights we've all slept soundly without waking, which is unusual. Between the three of us, we typically manage to keep a 24 hour watch.
Guess we were overdue for a change.