When you think about it, it's not easy to keep from wandering out of life. It's like someone's always leaving the door open to the next world, and if you aren't paying attention you could walk through it. That's why in your dreams it's like you're standing in that doorway. The dying and the newborn people pass by you, and brush up against you as they come in and out of the world during the night. You get spun around, and in the morning, it takes a while to find your way back into the world.