Sleeping for less than 4.5 hours, or more than 6.5 hours can lead to cognitive decline, as per a study
Getting a good night’s sleep is extremely important for overall health. Firstly, it allows your brain to relax and recharge. It improves your concentration and decreases your chance of getting heart disease and stroke. When you sleep poorly, you get at a greater risk of type-2 diabetes, mental health ailments, and your overall quality of life gets affected. These are the health impacts of undersleeping. But what about oversleeping? Does it have harmful health impacts too? As per a study undertaken by researchers in the United States, sleeping for more than 6.5 hours per night can lead to cognitive decline.
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The study was undertaken by researchers from the Washington University School of Medicine, who wanted to know how much sleep leads to cognitive decline. The study was published in the Brain Journal, which is published by Oxford University Press.
This is how the study was undertaken:
Sleeping for less than 4.5 hours per night, or more than 6.5 hours a night along with the poor quality of sleep leads to cognitive decline, the study found out. Another interesting result was that the impact of sleep duration on cognitive performance was similar to that of age, and age is a major risk factor in the case of dementia. Hence, this study clearly shows that both under, as well as oversleeping, are bad as far as cognitive performance is concerned.
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According to the Sleep Foundation, every adult should get at least seven to nine hours of sleep daily. This duration is more or less depending on age. The importance of sleep includes:
As you already saw, the right amount of as well as qualitative sleep is extremely crucial for good health. And to get that, you should inculcate healthy sleep practices, such as:
Hence, as you can see, sleep has an association with your cognitive performance. Hence, make sure you get enough and a good quality sleep every night. However, remember that both under and oversleeping are detrimental, hence, try to avoid that.
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