7 Causes for Excessive Sleep During Daytime To Be Aware Of

By on January 1, 2016

There are different reasons behind an individual feeling very tired during the day but it could also be Hypersomnia. This is quite an unknown sleep disorder causing excessive sleep during the day.

It is a disorder that causes an individual to sleep most of the time. People suffering from Hypersomnia generally sleep for more than ten to twelve hours and it can get very difficult to wake them up.

However, there is another sleep disorder that can result in excessive sleepiness during the day and it is called narcolepsy. People suffering from narcolepsy tend to fall asleep briefly and unwillingly during the day while driving, talking and even while eating.

Causes for Excessive Sleep During Daytime

Some of the most common causes for excessive sleep during daytime are detailed below:

Causes for Excessive Sleep

Inadequate or Insufficient Sleep at Night

Overtime and long hours of work cannot be tolerated for years and they take a toll on the sleep pattern of people during the night. People who are in the habit of working for long hours and even the teenagers who get home late at night might suffer from excessive sleepiness during daytime.

Sleep Apnea

Sleep apnea is another common cause for excessive daytime sleepiness. Sleep apnea is a sleep disorder in which the person experiences pauses in breathing while in sleep. This pauses in breathing results into having frequent sleep disruptions. This, in turn results into insufficient sleep during night making the person to experience excessive sleeping during daytime.


Obesity can also result into excessive daytime sleepiness. One of the many health consequences of obesity is sleep apnea.

Environmental Factors

Various environmental factors can also serve as the most common causes for excessive sleep during daytime. These include noisy neighbors, snoring partner, uncomfortable sleeping environment and cold and heat.

Mental State

Stress, anxiety and depression are some common mental conditions that can keep a person awake during the night resulting in daytime sleepiness. These are mental states that also sap energy making sleeping conditions worse for people.


The excessive intake of caffeinated drinks, alcohol, sleeping pills, antihistamines and tranquilizers can disturb sleep resulting in excessive daytime sleepiness. There are certain medical conditions like nocturnal asthma, hypothyroidism and various painful conditions which might also cause a person to sleep during the day.

Time Zone Changes

Traveling to different time zone is also one of the common causes for excessive sleep during daytime. Time zone changes like jet lag can have an impact on the internal biological clock of an individual. This biological clock regulates sleep and responds to light.

Photo Credits: nysleepcenter.com