There is nothing more discouraging in human discourse than someone yawning in your face while you're speaking to him. "Oh, excuse me," he might say, "I guess I'm just very tired." (Yeah, sure!)
But now, scientists have evidence that your listener may not be bored at all; but just chilling... his brain.
The U.S. Department of Agriculture (USDA) revamped its healthy eating recommendations a few months ago with a new visual - an icon called 'MyPlate,' replacing the former healthy foods pyramid icon. The Nutrition Source at the Harvard School of Public Health thinks the government's plate lacks a good bit of guidance as to which specific foods should be eaten - after all MyPlate offers no guidance.