What is normal quality of sleep

How much sleep does the human need?

The longer the sleep deprivation, the more extreme the consequences. The brain perceives visions, shadows and sounds that do not exist. The individual need for sleep depends largely on the genetic make-up. There are people who can get by on five hours of sleep, while others need ten hours to feel well rested.

Sleep researchers have found that people in western countries sleep an hour less on average than they did 20 years ago. They were also able to show that those who sleep too little do less during the day - and often don't even notice it. Because you can get used to too little sleep. This leads to a paradoxical phenomenon: the more people work, the less they sleep. The longer the working hours, the more frequent are sleep disorders, analyzed the scientists of the Federal Institute for Occupational Safety and Health. But only those who have had a good rest can achieve their full potential.

Seven hours of sleep

Research shows that most people need seven to eight hours of sleep. As a rule of thumb, if you can work while sitting for long periods of time during the day without getting sleepy, you will have found your personal sleep quota.

Get to know your need for sleep

Holidays are a good way to find out your individual sleep needs. Always go to bed at the same time in the evening and do not set an alarm clock. Do not get up until you feel awake and well rested. Then note how long you slept each night. From this you can read your personal sleep quota, which should also be adhered to during the working week.

Missing sleep can be made up for

Sometimes sleeping just doesn't work out. Fortunately, a lack of sleep can be made up for. This is shown in a study by the American sleep researcher David F. Dinges from the University of Pennsylvania in Philadelphia and his colleagues. If you really sleep in after a few short nights, you will regain a lot of strength. But you are only really fit again when you have had enough sleep for several days.