Nervous about a presentation, speech, or first date? Blow on your thumb. The vagus nerve, which connects to your thumb, controls your heart rate. By blowing on your thumb your heart rate will return to normal.
The smell of Crayola crayons is so familiar that it is 1 of the 20 most recognizable scents to American adults.
A person usually makes a lot of hand gestures when telling a true story. When telling a lie, a person's hands will stay noticeably still with a stiff posture.
