A number of years ago I started sitting under a light box first thing in the morning during the winter months to deal with my seasonal slumping habit. (It's a habit I advise against, fyi.) Anyway, when I explained to my friend Becky that the light box is supposed to trick your brain into thinking that winter days are longer than they actually are, she said, "Well then the brain must be a very stupid organ."
I thought of that yesterday when I read about a study that said depressed patients who smiled even though they didn't feel like smiling got better faster than the non-smilers. The thinking is that if you smile, your brain thinks you must be happy, so it gets happier, too.
This is awesome if it's true. But still. Come on, Brain. Aren't you a tiny bit embarrassed about being so gullible?