This is interesting...

I found this in a friend's blog...

If art bears witness to an enduring fascination with the body, so, too, does language. A close analysis reveals how deeply notions of the body have permeated the metaphoric structure of everyday English. For example, we say the heart of the city, the foot of the mountain, the mouth of a cave, the nose of a plane. We lend a hand, head up a team, have a good nose for a story, have a sweet tooth and a green thumb, keep our eye on the ball and our ear to the ground. We've got a weight on our shoulders, but lack the stomach for action. We speak of broadening the mind, costing an arm and a leg, being a pain in the neck and, rather oddly, making it by the skin of our teeth.