Human Sleep - What Causes Human Sleep? -

Human Sleep – What Causes Human Sleep?

Human Sleep

We all have the question of “what causes human sleep?” For most people, it’s a mysterious concept. Science has no idea how the human body maintains its sleep patterns and function. It is an extremely important question that requires more research and understanding in order to come up with a solution to sleep.

Human Sleep - What Causes Human Sleep?
Human Sleep – What Causes Human Sleep?

About sleep

If you are wondering what causes human sleep, you need to know that our bodies need adequate amounts of sleep in order to function properly. We have evolved from animals who needed to sleep in order to conserve energy and focus on survival, to where we are now.

Sleep Log

In order to determine how much sleep you need each night, you need to be able to do what is called a “sleep log.” This is a diary-type thing where you record everything that occurs during the course of your sleep. You can use this information when trying to determine how much sleep you should be getting each night.

Sleep Patterns

Sleep patterns for individuals may vary, and there is no one correct pattern for everyone. When you do a sleep study, the scientist will record your sleep for the night. You will then get a report of how long it took you to fall asleep, and whether or not you had REM (rapid eye movement) sleep or NREM (non-rapid eye movement) sleep.

If you have NREM sleep, then it is referred to as “deep” sleep. REM sleep is the state where you experience the rapid eye movements that give us dreams. These are the kinds of sleep cycles that we crave. It allows us to have quality rest, and keep our bodies functioning.

Human Sleep - What Causes Human Sleep?
Human Sleep – What Causes Human Sleep?

The Circadian Rhythm

Our human body is incredibly complex, and it has many systems that work together. One system, the circadian rhythm, is responsible for our sleep cycles. It is the clock that our bodies are set to maintain our sleep and wake cycles.

Our circadian rhythm actually gets triggered by things such as light, temperature, stress, and many other factors. In order to effectively monitor these changes, the researchers who study sleep make certain that they are using a clock that is able to respond to the outside world. For this reason, they use a laboratory with numerous different types of lighting and temperatures.

The scientists will try to place us in a situation where we go to sleep. It is nighttime when the environment is dark and cool. This will create a controlled environment, which mimics the conditions our bodies are accustomed to. During this time, they will watch for the results that are being measured in the laboratory.

Sleep Studies

In many sleep studies, a variety of variables is measured. The main variables that are usually looked at are how much sleep the subjects took. Then they will also be looking at their performance when they are going to the next day and how they slept. They will see if anything happens when they go to bed that alters their circadian rhythm. And also the sleep cycle they are accustomed to.

There is a major problem with studying humans in the lab, however. Because we are still relatively new, we don’t really understand how our body works the way it does.

Human Sleep - What Causes Human Sleep?
Human Sleep – What Causes Human Sleep?

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For example, some researchers think that people who are experiencing sleep disorders are more likely to have higher degrees of melatonin. Melatonin is a hormone that is naturally produced in the human body, and it is secreted by the pineal gland. It is said that those people who do not have enough melatonin, are more likely to suffer from insomnia, and many people who experience difficulty sleeping, also experience a change in their pineal gland.


To answer the question of “what causes human sleep,” we need to understand how our bodies work. This means that the scientific community needs to better understand circadian rhythms, and how it can affect our sleep patterns. With this information and further study, we will be able to develop more effective solutions for insomnia and chronic sleep problems.

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