Article: Wake up your brain: a new study shows how to jump-start your noggin.(INFO ZONE)

Feeling a little groggy in some of your new classes? Then have a big yawn (but cover your mouth, please). Researchers say yawning may be the brain's way of recharging itself. A new study by scientists at the University at Albany (New York) finds that yawning can help you ward off sleepiness and focus your brain better. The scientists compared the brain's cooling mechanism to how a fan keeps a computer's motor cool. So feel free to yawn before you check out this diagram of some other ways the human brain works.

Frontal lobe

Sudoku brainteasers can be tricky! (See "Brain Fun" below.) Thank goodness for the frontal lobe. It controls reasoning, planning, movement, and ...

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