Sleep is needed for the brain and body to recover. When you sleep at night, you cope more easily with stress and strain during the day. Getting enough sleep can also reduce the risk of diseases such as elevated blood lipids, cardiovascular disease, type 2 diabetes, depression and fatigue syndrome.
How many hours do you need to sleep?
Adults usually need between six and nine hours of sleep per day. But it varies from person to person. It also varies depending on how efficient the sleep is, that is, how much deep sleep you have had.
As long as you feel alert and function well during the day, you are getting enough sleep. On average, adults sleeps about seven hours per day.
The different phases of sleep
Sleep is divided into so-called sleep cycles of about 90 minutes. During a sleep cycle, sleep alternates between different sleep phases.
The different sleep phases are as follows:
- The falling asleep phase. In that phase, sleep is shallow and you are easily awakened.
- Bass sleep, the so-called normal sleep.
- The deep sleep. In that phase, the body recovers and builds up. During deep sleep, the muscles relax and you are difficult to wake up.
- Dream sleep, the so-called REM sleep. REM stands for rapid eye movement.
The important deep sleep
Deep sleep returns regularly during the night together with periods of dream sleep. At the beginning of the night, sleep is dominated by deep sleep. After that, the periods of deep sleep become shorter and the periods of dream sleep longer. In order for your body and brain to recover adequately, you need to get enough deep sleep. It is easiest to sleep and get deep sleep when the body's internal clock is set to night and the body's metabolism is low.
As you get older, deep sleep decreases and you sleep shallower and wake up more easily. It may be that with increasing age we need less sleep, but this has not yet been clarified.
It's hard not being able to sleep some nights, but it's not dangerous. When that happens, the body can make up for the lack of sleep the following night. If the sleeping difficulties persist, it is important to consider the causes as soon as possible.
The immune system is weakened by a lack of sleep, which makes it easier for you to get sick. Too little sleep also affects the brain's satiety and hunger center so you can feel hungrier. Lack of sleep also affects blood sugar balance and can make you extra hungry for sweets.
How remote patient monitoring for sleep works
When you are monitored for sleep, you record how many hours you have slept per night in a mobile app. You can also connect Apple Health or Google Fit to the sleep flow, which then transfers values from these programs to the app. Your values you register in the app are also sent to your caregiver. You and your caregiver can both see how the values have changed over time through graphs and tables.