For most of us, five hours of sleep is not OK. Most adults need about eight hours of sleep. And while some people need five hours, it's extremely rare. For most of us, five hours of sleep can lead to sleep deprivation, low energy, poor focus, and long-term health issues.
Only getting five hours of sleep affects a person's daytime functioning, sense of well-being, and both their mental and physical health. Though one night of insufficient sleep has consequences, the effects of sleep deprivation are cumulative.
For those whose sleep was tracked at age 50, people who slept five hours or less a night faced a 30% higher risk that they would develop multiple chronic diseases over time than those who slept at least seven hours a night. At 60, it was a 32% increased risk, and at 70, it was a 40% greater risk.
While some people regularly function on short periods of sleep, research mostly agrees that six hours of sleep is not enough for most adults. Experts recommend that most adults need at least seven hours of sleep every night.
Researchers at the University of California, San Francisco, discovered that some people have a gene that enables them to function well on six hours of sleep a night. This gene, however, is very rare, appearing in less than 3% of the population. For the other 97% of us, six hours doesn't come close to cutting it.
Elon Musk says he's upped his sleep to 6 hours per night—and that his old routine hurt his brain. Elon Musk, CEO of Tesla, speaks with CNBC on May 16th, 2023. Elon Musk says his days of trying to sleep less and work more are over — at least, relatively speaking.
Six hours of sleep is not good for most adults. Most of us need about eight hours of sleep, and some need even more. Only getting six hours of sleep can lead to low energy, impaired mental performance, poor mood, and health issues like weight gain, high blood pressure, and type 2 diabetes.
Unfortunately, most people cannot have a healthy lifestyle with only four hours of sleep, research suggests. However, personal and anecdotal evidence supporting shorter sleep by using polyphasic sleep suggests otherwise. This means that we cannot say for sure if you can thrive on four hours of sleep.
So why do people think they are able to function optimally on 6 hours of regular sleep? This is because of a natural human phenomenon known as 'renorming'. Renorming means that we are only able to compare how we feel today to how we felt yesterday or the day before.
This is because our brain is constantly forming new connections while we are awake. The longer we are awake, the more active our minds become. Scientists believe that this is partly why sleep deprivation has been shown to reduce symptoms of depression. However, there are negative outcomes of this, too.
In adults, a nap typically includes all the stages of sleep but in different proportions than regular nightly sleep. Naps are a useful stopgap for people who struggle to get enough sleep at night. But health experts agree that napping does not provide the same restorative power as a full night's rest.
Anxiety, stress, and depression are some of the most common causes of chronic insomnia. Having difficulty sleeping can also make anxiety, stress, and depression symptoms worse. Other common emotional and psychological causes include anger, worry, grief, bipolar disorder, and trauma.
To date, there are no known health problems related to being a true short sleeper. In contrast, studies have found people with insomnia or those who intentionally restrict their sleep to less than six hours per night despite requiring more sleep have a higher risk of numerous health problems, such as heart attacks.
Modern research suggests that sleeping twice in a 24-hour period (a sleep pattern that is alternately referred to as biphasic sleep, segmented sleep, or siesta sleep) may facilitate greater energy levels, alertness, cognitive function, and productivity.
Get Comfy In A Dark And Quiet Environment
Light limits the amount of melatonin your body produces, which is one of the signals that tells your body it's time to enter sleep mode. So complete darkness is ideal if you want four hours of quality sleep.
Sleep requirements stabilize in early adult life, around the age of 20. Individuals vary in their sleep needs but most adults require between 7 and 9 hours a night to feel properly refreshed and function at their best the next day.
We do not recommend sleeping for only one hour at night. Some research suggests that lost sleep can take years off your life and that you may not be able to catch up on the lost hours of rest. This is because consistent sleep deprivation can cause a myriad of chronic health issues in people over time.
If you are not getting enough sleep, your body will eventually make you sleep. How long it takes you to fall asleep (sleep latency) is affected by how much your body needs to sleep.
Getting up for a short while can help if you have trouble falling asleep sometimes or if you occasionally wake up and can't go back to sleep. But you don't want to have to do it every night. If you have trouble falling asleep, it's best to train your body to wind down and relax with a pre-sleep routine each night.
Experts recommend that adults sleep between 7 and 9 hours a night. Adults who sleep less than 7 hours a night may have more health issues than those who sleep 7 or more hours a night.