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Saturday, December 29, 2012

Why I Sneeze, Shiver, Hiccup, and Yawn



Melvin Berger's Why I Sneeze, Shiver, Hiccup, and Yawn is a Stage 2 Let's Read-and-Find-Out Science Book perfect for K-2 science (human body-nervous system) or just plain curiosity.
"A yawn begins when the lungs have too little oxygen in them. Nerves signal the muscles around your jaw to pull apart. You yawn, and as you do, you take an extra-deep breath of air. With more oxygen in your lungs, you feel a little less sleepy."
The book also includes fun activities such as testing your blinking reflexes, pupil dilation or trying to sneeze with your eyes open!

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