{"product_id":"why-is-yawning-contagious-everything-you-ever-wanted-to-know-about-the-human-body-and-some-things-youd-rather-not-know","title":"Francesca Gould: Why Is Yawning Contagious? [2007] paperback","description":"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.","brand":"Gould, Francesca","offers":[{"title":"New","offer_id":49167862006099,"sku":"9780749951580","price":14.27,"currency_code":"EUR","in_stock":false},{"title":"Good","offer_id":47290540360019,"sku":"XG80749951580","price":4.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4001\/6057\/files\/gould-francesca-francesca-gould-why-is-yawning-contagious-2007-paperback-58076285894995.jpg?v=1727883307","url":"https:\/\/chaptersbookstore.pro\/products\/why-is-yawning-contagious-everything-you-ever-wanted-to-know-about-the-human-body-and-some-things-youd-rather-not-know","provider":"Chapters Bookstore","version":"1.0","type":"link"}