Just as toast goes perfectly with jam, so does sleep go with total fitness. When you’re asleep, numerous good things happen to your mind and body (including the occasional visit from the tooth fairy)!
Memory & Learning:
One very important benefit of proper sleep is the help it gives you with learning and memory. Whether you’re 60 and trying to navigate the intricacies of Facebook (the fastest growing segment of Facebook users in the past 2 years has been females aged 48-64), or a 20 year old college student trying to study for an exam, getting some sleep after going through the material will help you master the information.
In a 2010 Harvard study, volunteers learned a complex maze. Some of them then took a 90 minute nap. The only people who increased their performance on a second attempt at the maze were those who dreamed about it during their naps. The researchers concluded that the brain was reactivating and reorganizing the recently learned material during the nap.
But let’s face it – few people have 90 minutes in the day for a nap. If we did, we’d probably just get the 8-9 hours (20 year olds need 9-10) of sleep that our bodies actually need each night. Good news – a German study found that a short, six-minute nap helped participants recall a list of 30 words they had memorized earlier.
In our recent post about the 3 stealth saboteurs of weight loss, we mentioned how less than 6 hours of sleep can be correlated with weight gain. According to research from the University of Michigan, an extra hour of sleep each night can help you drop 14 pounds per year. Maybe because you are sleeping instead of snacking! Also, hormones are a tricky thing, and being awake so much can rev up your appetite! And in a study that just came out today (Oct. 25, 2012), a review of 15 years of research “indicate an effect of partial sleep deprivation on body weight management.” Partial sleep deprivation, an energy imbalance, and weight gain prevention and weight loss promotion are all linked! More than 35 percent of American adults are obese and more than 28 percent sleep less than six hours a night, and the study authors found these two to be correlated.
The Harvard study also discovered that those whose naps were long enough to enter REM sleep did 40% better on a test of creativity than nappers who didn’t get any REM sleep and non-nappers. That REM sleep gave the brain time and the ability to work creatively on the problems that had been posed for the test.
So forget the caffeine and alcohol; forget the all-nighters; and forget whatever it is you forgot because you’re overtired! Acting like “an adult” is just making us overweight, grumpy and dull. Better to act like a kindergartener and take a nap!
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