Is 7.5 hours of sleep better than 8?
One of the most acclaimed sleep researchers, Daniel Kripke, said there’s never been any evidence to back the 8-hour rule. In his most recent study, Kripke found that “people who sleep between 6.5 hours and 7.5 hours a night, live the longest, are happier, and most productive.”
Did you know facts about sleep?
The facts about sleep
- 12% of people dream entirely in black and white.
- Two thirds of a cat’s life is spent asleep.
- A giraffe only needs 1.9 hours of sleep a day, whereas a brown bat needs 19.9 hours a day.
- Humans spend 1/3 of their life sleeping.
- The record for the longest period without sleep is 11 days.
Is 7 or 9 hours of sleep better?
Sleep guidelines Some people may need at least 9 hours of sleep a night to feel well rested, while others in the same age group may find that 7 hours of sleep is just right for them.
Is 9 hours of sleep better than 7?
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.
Is 7 or 8 hours of sleep better?
The National Heart, Lung and Blood Institute recommends seven to eight hours, including the elderly. Most current guidelines say school-age children should get at least 10 hours of sleep a night, and teenagers, nine to 10.
What is a good time to wake up?
A study from Paul Kelley and Oxford University states that the ideal wakeup time when we’re in our twenties is 9:30 a.m.; in our thirties, 8 a.m.; in our forties, 7:30 a.m.; in our fifties, 7 a.m.; and in our sixties, 6:30 a.m. This means, of course, we need to adjust our bedtime to match our wakeup time to get the …
Why do I feel so sleepy all the time?
The most common causes of excessive sleepiness are sleep deprivation and disorders like sleep apnea and insomnia. Depression and other psychiatric problems, certain medications, and medical conditions affecting the brain and body can cause daytime drowsiness as well.
How long do we need to sleep?
National Sleep Foundation guidelines advise that healthy adults need between 7 and 9 hours of sleep per night. Babies, young children, and teens need even more sleep to enable their growth and development. People over 65 should also get 7 to 8 hours per night.
Who invented sleep?
Approximately 65 Years Ago, Eugene Aserinsky Discovered REM Sleep. It was Sigmund Freud who stated, “Dreams are the royal road to the unconscious.” Eugene Aserinsky (May 6, 1921 – July 22, 1998), a pioneer in sleep research, was a graduate student at the University of Chicago in 1953 when he discovered REM sleep.