There are some
days that start off with the feeling, "I can't wait until I go back to
sleep." For some reason, largely unrelated to the amount of sleep we
get, we seem to crave more time; we want shut-eye. Researchers have
studied this phenomenon and say there is far more to sleep than actual catch-up
of sleeping hours. Our brains need the down time as well. Our
brains also need time to process memories. They are studying this using
functional MRIs. The results are fascinating and clearly there is more to
sleep than meets the eye.
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