Why Do We Sleep?
The human need for sleep is a mystery.
We spend roughly a third of our lives asleep. Snoozing is vital to our well-being — no human can go without it for more than a handful of days. And yet it is perhaps the least understood of all our activities.
Theories abound, but much of our need for sleep remains a mystery. Sleep certainly allows for a lot of body "maintenance work," from production of chemicals that get used during waking hours to the self-organization of neurons in the developing brain. REM sleep, with its high neuronal activity, occurs more during periods of brain growth.
Several theories point to sleep as a state vital to memory and learning abilities. Sleep may help ingrain episodic memories into long-term storage, and it also may simply give our waking activities a much-needed break.
Life's Little Mysteries: Gift Edition Hardcover Book
Uncover the truth behind more than 100 mysteries that surround us every day with our new hardcover book! Perfect for gifts and classrooms, and suitable for all ages. Some of the included mysteries are:
- Why Do Cats Land on Their Feet?
- How Long Does it Take to Make Petrified Wood?
- What Everyday Things Around Us Are Radioactive?
Find out all of this and much, much more in our NEW hardcover book.
It makes a great gift idea for all ages. more info>>