Your Body Really Is a Wonderland

Ten things we're betting you didn't know about that fascinating bag of bones
By Sophie Goldstein,  Newser User
Posted Oct 19, 2007 10:36 AM CDT
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(Newser) – Our bodies may be just organ-filled sacks of chemicals and genes, but their workings are marvelous—and occasionally gross. LiveScience shares 10 of the body's best mysteries:

  1. Your skin has four colors
  2. Your brain automatically responds when someone else laughs, cries, sneezes, or yawns
  3. Our bigger brains have crowded out our once-useful wisdom teeth

  1. Your nose hairs move mucus
  2. Puberty reshapes brain structure
  3. Thousands of eggs go unused by the ovaries
  4. The brain uses 20% of the oxygen and calories the body takes in
  5. If calcium levels in the body dip, bones will break down to replenish them
  6. Body position can trigger memory
  7. Your stomach secretes corrosive acid