A circadian rhythm is also known as the biological clock.
If the biological clock is affected, you will have difficulties trying to sleep.
Here are 4 reasons why and how it can happen to you.
After knowing about them, you should be able to avoid these factors that can cause you your sleep.
Jet lag This happens when you travel in airplanes to different time zones.
For example, you travel from the US to UK, which takes approximately 5 hours or so.
By the time you reach there, the weather could remain the same as when you had departed from US.
The problem is, you are supposed to sleep because it is approaching midnight back in the US, but it is still sunny in the UK! If you do travel to countries with drastically different time zones, you can expect to reset your bio clock in 3 to 4 days.
Rotating work shifts Workers at the hospital or people who work during odd hours have this problem.
For example, security guards who work during their night shifts have their bio clock completely reversed.
They sleep during the day and are awake during night time.
DSPS (delayed sleep phase syndrome) When a person has this syndrome, he or she can remain alert during the night time.
Usually others will be fast asleep already, but DSPS people can remain alert and still do their activities.
They are also called night owls.
Night owls usually have difficulty waking up for school or work.
ASPS (advanced sleep phase syndrome) People who have ASPS tend to feel very drowsy when evening time approaches.
Then they wake up during the wee hours in the morning.
Usually, elderly people have this problem.
ASPS is a common sign of aging.