It's True! Sleep Makes You Smarter (It's True!) (It's True!) by Thalia Kalkipsakis PDF

Nonfiction 3

By Thalia Kalkipsakis

ISBN-10: 1741148626

ISBN-13: 9781741148626

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Extra resources for It's True! Sleep Makes You Smarter (It's True!) (It's True!)

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But hibernation is not sleep. 5 Hmmm, how do you annoy a fly? 4 42 Did the dinosaurs dream? Which animal has sleep cycles most like your own? A Turtles B Mice C Seagulls The answer is ‘B’: mice. That’s because they’re mammals like us, meaning they have warm blood and their babies drink milk from the mother. Turtles and seagulls both sleep. But they’re not mammals and they don’t have sleep cycles like ours. Turtles are reptiles and their sleep is only slow-wave – they don’t have REM sleep, so they probably don’t dream.

Wonder what happens to the drool? 35 Sun sync There’s another cycle that’s even more powerful than your internal clock. It’s the biggest and hottest thing that you’ll ever see. Yes, it’s the sun. The pineal gland in the middle of your brain is affected by light. Light during the day is like an Off switch for your pineal gland. It stops producing a special hormone called melatonin, that makes you feel sleepy. After sunset, the switch flicks to ‘On’ and melatonin is produced again . . time for bed.

A dream from early in the night would come true in a year’s time. A dream from the middle of the night might not come true for eight months and dreams from the end of the night were coming true now. Dreams weren’t mystical for everyone, though. Some of the ancient Greeks thought they were connected to the waking world. Hippocrates, a famous doctor, used dreams to help diagnose disease. 53 Galen, who lived 300 years after Hippocrates, also used dreams to work out what was wrong with his patients.

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It's True! Sleep Makes You Smarter (It's True!) (It's True!) by Thalia Kalkipsakis


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