December 28, 2020 5 min read
Sleeping longer should make you feel great, right? So why does it sometimes make you feel tired?
The average person spends about one-third of his life sleeping. As much as people love sleep, maybe you don’t want to spend any more than one-third of your life in it so as not to miss all the excitement. Plus, oversleeping a lot can lead to severe health problems.
The Sleep Doctor, as Michael J. Breus, is known, answers the question of why you feel tired after a long sleep in an article on Huffington Post  and on his own Twitter account.
Dr. Breus, an author and physician, says the right amount of sleep is so important to people’s health that sleep itself should be added to the vital signs along with heart rate, temperature and blood pressure.
His Twitter account  has links to articles by himself and others advising that sleep loss and other sleep aberrations can cause heart disease, high blood pressure, cancer, diabetes, contribute to you eating unhealthy foods and gaining weight, and undercut social skills.
Plus, he reports, getting the right amount of sleep can make you look more intelligent.
The World Sleep Society says there are more than 100 sleep disorders, and sleep is one of the three pillars of good health, along with a good diet and exercise.
In his Huff Post article on feeling tired after sleeping longer, Dr. Breus says the reason for this is because the circadian rhythm gets thrown off. The circadian rhythm, also known as the biological clock, is the cycle of sleeping and waking.
The circadian rhythm can be interrupted by being a person exposed to light when it is normally dark, a break in a person’s routine, sleeping too much or too little or because of chemical stimulation or tranquilization (drugs).
Sleep hygiene video
Dr. Breus says the body’s rhythms reset every 24 hours. He adds: “Once our body clocks, or circadian pacemakers, start ‘telling the wrong time,’ we feel it in lethargy, fatigue, and a sleep cycle gone haywire. The clock says one thing and your body says another, very similar to jet lag.”
Within the body’s biological rhythm is a sleep cycle, which lasts between 80 to 120 minutes. The average is 90 minutes, Dr. Breus says. He writes:
The average person who sleeps 7.5 hours goes through five cycles each night. When you sleep in, you are extending your number of cycles, and then generally you wake up in the middle of a cycle. If it is in the part of the cycle that is deep or REM sleep you can wake and feel worse than before you went to sleep.
Dr. Breus gives tips on how to keep your biological rhythm working like clockwork:
The World Sleep Society website , which proclaims Good Sleep Is a Reachable Dream, has 10 commandments of sleep that it publicizes on World Sleep Day. The site advises:
Harvard Health has an article  that states any sleep pattern disruption can make you feel tired:
Research bears out the connection between too much sleep and too little energy. It appears that any significant deviation from normal sleep patterns can upset the body's rhythms and increase daytime fatigue. The best solution is to figure out how many hours of sleep are right for you and then stick with it — even on weekends, vacations, and holidays.
WebMd.com has an article  that says oversleeping can lead to heart disease, diabetes, and increased risk of dying. Too much sleep can cause headaches, obesity and back pain, the article says.
The article states:
The amount of sleep you need varies significantly over the course of your lifetime. It depends on your age and activity level as well as your general health and lifestyle habits. For instance, during periods of stress or illness, you may feel an increased need for sleep. But although sleep needs differ over time and from person to person, experts typically recommend that adults should sleep between seven and nine hours each night.
Got that? Seven to nine hours of sleep per night is optimal. Sweet dreams!
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