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"When asleep, there's a lot going on in the brain. Brain right shows a much higher activity. Thing was weird because most people are right-handed left-brain dominated. But during the break, the right brain is the most active," said Andrei Medvedev, an assistant professor in the Center for Functional and Molecular Imaging Georgetown University
Medevdev explained that during daytime sleep, the brain did some mental tasks such as organizing and processing information. In addition, he also describes several other unique benefits as reported by Fox News, Wednesday (11/14/2012), namely:
1. Improve memory
A 2008 study found that a 45-minute nap can help improve memory. This increase occurred in the phase of slow-wave sleep or short-wave sleep as it usually happens at nap time.
Increased brain activity during sleep is also believed to be beneficial to learn a foreign language. The words or terms will be more memorable if often played while sleeping.
2. Increase productivity
Napping may protect the brain from the information processing that occurs in excess and help consolidate the newly learned information. This in turn will increase concentration and productivity in the workplace. Fact, previous studies have found an afternoon nap can reduce blood pressure.
3. Treating insomnia
Research has found that people who napped for 15 minutes feel more alert and less sleepy, even when the lack of sleep the previous night.
The effect can indeed vary in each individual, but a study in 2011 confirmed insomniacs nap makes so much more fit for total rest time longer.
4. Reduce stress
Want to cut as much as half of the stress hormone cortisol? Research shows that stress hormones dramatically decreased after a nap, especially if overnight sleep less soundly.
A German study found that when a group of pilots slept less than 7 hours a night before serving, kortisolnya levels increased significantly and lasted for 2 days. However, when it managed to take a nap for a while, cortisol levels decrease by half.
5. Preventing heart disease
A short nap for 20-40 minutes to reduce the risk of cardiovascular diseases such as heart disease and stroke. This conclusion is based on research conducted by Greek researchers.
Researchers found that people who nap at least 30 minutes for 3 times a week can reduce the risk of cardiovascular disease by 37 percent. According to this study, a healthy nap should be done between the hours of 1-3 day for no more than 45 minutes. If excessive, it has awakened with a 'heavy head'.
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