Faster Down Hill

"Have you noticed," Claire Nathan said, "that everything goes faster downhill?"

"I think even Einstein noticed that," her husband, Randall, said.

"No, I'm talking about growing older. When you're young, you literally run up that hill, trying to get to the top. As you get farther up, you go slower. It's steeper, and you have less energy. The top is rounded, and when you crest it, you don't notice at first how it's sloping down on the other side. But then you start down, and you gain momentum, and pretty soon you're out of control, windmilling down, going so fast that getting out of bed and getting back in just sort of blend together."

Her husband thought about it and decided to go to bed.