Why is Yawning Contagious? : Everything You Ever Wanted to Know About the Human Body and Some Things You'd Rather Not Know, Paperback

Why is Yawning Contagious? : Everything You Ever Wanted to Know About the Human Body and Some Things You'd Rather Not Know Paperback

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Everything you ever wanted to know about the human body - and some things you'd rather not...A wonderfully entertaining yet authoritative treasure trove of facts about our anatomy - it answers all the questions about our bodies we're usually too embarrassed to ask.* Why is yawning contagious?

Some experts think that yawning may have developed as a means of communication.

It may, for example, be a way of signalling to others that it's important to remain alert and stay awake in a certain situation.

Another theory is that our early ancestors used it as part of their social behaviour, and as a way to help build a bond with the rest of the group.* Why are bogies green?

When white blood cells meet germs, they make a large amount of an enzyme called myeloperoxidase, which is green because it contains a lot of iron.

The colouration therefore comes from the iron.

Information

  • Format: Paperback
  • Pages: 240 pages, illustrations
  • Publisher: Little, Brown Book Group
  • Publication Date:
  • Category: Popular medicine & health
  • ISBN: 9780749951580

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