How long do you sleep every day? Do you feel sleepy when you stay up late to review for your exam and get up early the next day? Sure, of course. But, do you have this kind of experience that you feel sleepy and groggy when you sleep too much? I do. We all know that we feel drowsy if we do not have enough sleep time. But is it possible for us to feel drowsy if we sleep too much?
A study suggested that seven and a half to nine hours of sleep every night is required for most of the healthy adults to function at their best. Therefore, what if people spend more than 10 hours sleeping? Are they refreshing after sleep for more than 10 hours? The answer is no. Here is my personal experience, during the summer vocation, I slept 11 hours every day. Each time I woke up, I felt drowsy and even headache. This actually happens. Dr. Lisa Shives, medical director at Northshore Sleep Medicine in Evanston, Illinois, indicated that when an individual hovers within sleep and wakefulness, it is called sleep drunkenness. It makes people feel groggy after sleep too much time. Feeling groggy makes people lazy and feel sleepy. That is why we always feel sleepy when oversleeping.
Besides, researchers said that oversleeping has impact to the certain neurotransmitters in the brain, including serotonin. Therefore, people might have headache when they wake up after they sleep too much.
To sum up, it is important to notice that having too little time sleeping makes people feel slouching while having too much time sleeping also causes sleepy, drowsy and groggy. It has physical side effects to our health, such as causing obesity and back pain. Sleeping is one of the factors that affect our health. What we should do is to control the time we sleep so that we can make our body function works better.