Napping Bears and Strong Bones

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When bears hibernate they stay in their dens for a long time, if humans were to lay in one spot for five months we would lose a third of our bone mass. While our bones get weaker bears get stronger! They make a substance that keeps their bones healthy and promotes the growth of new cells.

napping_grizzly_bear

http://www.unep.org/Documents.Multilingual/Default.asp?DocumentID=531&ArticleID=5775&l=en

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10 COMMENTS

  1. If only our bones got stronger, than I could justify sleeping in on the weekends! 🙂 Ahhhh if only I were a bear