Most people know that skimping on sleep can be bad for you. Regularly getting too little sleep is linked to a number of chronic diseases, not to mention irritability and sluggishness during the day.
But did you know that sleeping too much could also be problematic? Oversleeping is associated with many health problems, including: Does that mean sleeping too much will make you sick? Not necessarily, says Vsevolod Polotsky, M.D., Ph.D., a professor of medicine at Johns Hopkins Medicine. “We don’t exactly know the cause and effect,” he says. “It probably works the other way, that when you are sick, it leads to more sleep time.” Does sleeping too much
actually contribute to illness, or is it a sign of an existing condition? Either way, if you find yourself always nodding off or looking for the next nap, it might be time to see your doctor. Sleep needs can vary from person to person, but in general, experts recommend that healthy adults get an average of 7 to 9 hours per night of shuteye. If you regularly need more than 8 or 9 hours of sleep per night to feel rested, it might be a sign of an
underlying problem, Polotsky says. What’s Making You So Tired?A number of conditions can disrupt sleep or interfere with the quality of your slumber, leading you to feel tired and sluggish even after spending 8 hours in bed, says Polotsky. Those conditions include:
Then there are conditions that don’t significantly impair the quality of your sleep, but increase the amount of sleep you need. Those include:
Fortunately, there are treatments for many of these conditions, which can help improve the quality of your sleep. Having a Sleep StudyMany people find themselves sleeping more as they get older, and assume it’s a normal part of aging, Polotsky adds. But getting older shouldn’t change your sleep needs dramatically. If you’ve ruled out those conditions and are still hitting the snooze button after 9 hours under the covers, it might be a clue that you have an underlying medical condition such as heart disease, diabetes or depression. If you’re an oversleeper, Polotsky recommends checking in with your doctor. He or she might recommend a sleep study to rule out sleep disorders. “You should seek professional help from a sleep center,” he says. How Do Sleep Needs Change With Age?Sleep needs vary somewhat from person to person. The National Sleep Foundation recommends these targets for making sure you log enough sleep each day:
• The average person needs 7.5 hours of sleep and goes through five sleep cycles per night (the 5th is REM).
Wrong. According to sleep specialist and author of "The Power of When," Dr. Michael Breus, more sleep isn't always better for you. To understand why this is, we need to look at sleep cycles and how much sleep the average person needs. Breus says that most people need 7.5 hours of sleep — the revered eight hours is just a myth. Here's where that number comes from: The average person goes through five sleep cycles per night. Each one of those cycles is approximately 90 minutes long. Five cycles of 90 minutes each translates to 450 minutes in total which works out to be about 7.5 hours. ArthurHidden / iStockHowever, Breus says that it's not just the hours of sleep that matter, but also which sleep cycle you wake up from. "The stage of sleep that you wake up in is the one that has the biggest effect on what I call a sleep hangover," he says. There's stage one, two, three, four, and REM. According to Breus, stages one and two are the easiest to wake up from, REM is slightly more difficult, and then stages three and four are the hardest. When you sleep an extra hour or two more than you normally do, chances are you're going to wake up from the REM cycle, or cycles three or four, which means you're going to feel groggier. This also explains why taking a short power nap is more effective than taking a longer nap. Longer naps will force you to wake from one of the later sleep cycles, leaving you feeling more tired than rested. Breus recommends napping for just a short 25 minutes instead. So even if you feel tired enough to sleep forever, stick with the number of hours you need instead. "If I give people one piece of advice, it's stick to one sleep schedule, period, end of story," Breus says. "That will be the most effective in not only helping you fall asleep but to get the good quality sleep you’re looking for." Why do I still feel tired after sleeping?Chances are, your morning grogginess is just sleep inertia, which is a normal part of the waking process. Your brain typically doesn't instantly wake up after sleeping. It transitions gradually to a wakeful state. During this transition period, you may feel groggy or disoriented.
Why can I sleep for 12 hours and still be tired?Characteristics of hypersomnia
In extreme cases, a person with hypersomnia might sleep soundly at night for 12 hours or more, but still feel the need to nap during the day. Sleeping and napping may not help, and the mind may remain foggy with drowsiness.
Is 9 hours of sleep too much?How Much Sleep Is Too Much? Sleep needs can vary from person to person, but in general, experts recommend that healthy adults get an average of 7 to 9 hours per night of shuteye. If you regularly need more than 8 or 9 hours of sleep per night to feel rested, it might be a sign of an underlying problem, Polotsky says.
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Why am i still tired after sleeping 9 hours
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