The brain has no nerve endings - which means it can be burned, frozen or cut without the slightest sensation, according to Reader's Digest.
Here's some other body lore:* The body constantly sheds dead skin cells and replaces them with new ones; 75 percent of the dust floating around an average house is made up of dead skin cells.
* Almost all human skin is infested with microscopic animals, about 20 million per square inch. They are impossible to wash off, but they are probably beneficial for cleansing follicles and glands.
* In 1977, a South African boy had a flower seed sprouting in his eye. The eyes provide all the conditions necessary for the germination of seeds: warmth, oxygen, protection from sunlight and moisture.