Everyone has different sleeping habits. Some can not sleep with the lights on and even find comfort with a gentle breeze from a fan or air conditioner
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If you are a figure who has a habit of sleeping with a fan gust, it's good to immediately stop it. Some time ago, a man from Thailand died of hypothermia after installing three fans during sleep.

In addition to avoiding the heat, there are often people who turn on the fan just to hear the sound of the engine and accompany sleep.

"People who sleep with fans experience what we call white noise, just like the white light that covers all the colors on the spectrum, white noise covers all the sound frequencies in the hearing," Kelsey Allan said of How Stuff Works.

He then explained that white noise is not only generated electronically. However, other sounds such as fans, crickets, and even rain can produce similar effects.

According to the American Psychological Association the fan rings that help people to sleep are affected by sleep spindles in the brain.

Sleep spindles can be seen through an electroencephalogram (EGG) test that shows upward and downward brain waves to form spikes or spindles.

Another study published by Current Biology scientific journal reveals that people who experience sleep spindles have the ability to block out better noise.

The ability to muffle the noise is affected by the thalamus, where the sleep spindle is produced. Thalamus itself is part of the brain that controls the information and sound sensors. Thalamus will then dispel a disturbing sound so that one will not wake from sleep.

Sleep spindles generally occur when a person experiences Rapid Eye Movement (REM) and will continue to occur statically every night.

Another study published by the scientific journal Proceedings of the National Academy of Sciences of the United State of America (PNAS) conducted an experiment on the production of sleep spindles in rats using optogenetics techniques.

The results found that increased sleep spindles were associated with a sleep or deep sleep Non-rapid Eye Movement (NREM), a condition in which a person does not dream while falling asleep.

The study's authors then concluded that sleep spindles can be a solution for people who have trouble falling asleep.

The neourologist and sleep medical director at the Mischer Neuroscience Center, Memorial Hermann of The Woodlands Medical Center, Kevin Gaffney, revealed that cold temperatures also contribute to the condition that a person can not sleep without a fan.

"Normal body temperature is 36.5 degrees Celsius and will drop to 1 to 2 degrees at nightfall If you have problems lowering your body temperature, then your sleep quality can also be reduced," he said.


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