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Who sleep 4 hours a day?

In our fast-paced world, it’s not uncommon to hear people boast about how little sleep they need to function. Some even claim to only need four hours of sleep a day! But is this actually healthy, or just a recipe for exhaustion and burnout? In this article, we’ll explore who might be able to get by on four hours of sleep, what the risks and benefits are, and whether this extreme sleep schedule is actually practical for the average person.

1. The Sleep Deprived

One of the groups of people who commonly sleep four hours a day are those who suffer from sleep deprivation. Sleep deprivation is a condition wherein a person does not get enough sleep. According to the National Sleep Foundation, adults need an average of 7-8 hours of sleep every night, while teens need about 8-10 hours.

Sleep Deprivation

2. Busy Professionals

The demands of work and life can also lead to a four-hour sleep schedule. Many busy professionals who work long hours and have busy personal lives often find it challenging to squeeze in enough time for a good night’s sleep.

Busy Professionals

3. Students

Students are another group of people who may only sleep four hours a day. The pressure to perform well academically, the need to juggle extracurricular activities, work, and social life may all contribute to insufficient sleep.


4. New Parents

For new parents, sleep deprivation is a common experience, particularly for the first few months of their child’s life. Babies require frequent feeding, diaper changes, and often wake up at night, which can lead to a significant reduction in the amount of time parents have for sleeping.

New Parents

5. Those with Medical Conditions

Medical conditions can also contribute to a four-hour sleep schedule. Conditions such as chronic pain, sleep apnea, and restless leg syndrome can disrupt sleep and make it challenging to get the recommended amount of sleep every night.

Medical Conditions

6. Those with Mental Health Issues

Mental health issues such as anxiety, depression, and bipolar disorder can also lead to sleep deprivation. Insomnia, a common symptom of mental health conditions, can cause a person to struggle with falling asleep or staying asleep.

Mental Health

7. Shift Workers

Shift workers are prone to sleeping for only a few hours a day. Working a late shift or a night shift can throw off the body’s natural sleep-wake cycle and make it challenging to get the recommended amount of sleep.

Shift Workers

8. Night Owls

Night owls are people who prefer to stay up late and wake up late. They may sleep for fewer hours and perform better when they get to sleep during their body’s natural sleep cycle, which is typically late at night.

Night Owls

9. Military Personnel

Military personnel are often required to work long hours and have irregular schedules, which can make it difficult to get enough sleep. Strict schedules and the need to be alert at all times can also contribute to sleep deprivation.

Military Personnel

10. Those who Choose to Sleep Less

Finally, some people choose to sleep less due to their lifestyle choices. They may believe that sleeping for four hours is sufficient, or they may prioritize other activities over sleep.

Sleep Less

Health Risks of Sleeping Only Four Hours a Day

It’s a common belief that cramming in as much work as possible during the day requires sacrificing sleep. However, many studies show that this couldn’t be more faulty. Studies reveal that sleeping for 7-8 hours every night is crucial for our health and well-being. Sleeping for less than this threshold has many adverse health risks. Below are some health risks of sleeping only 4 hours a day.

Mental Health Risks

People who sleep for four hours or less were found to be at high risk for depression symptoms and suicidal ideation. The body requires enough rest to balance mood stabilizing chemicals and hormones, removing toxins that accumulate within the brain and allowing new nerve cells to grow to support learning, memory, and problem-solving abilities.

Sleep Deprivation Affects Brain Performance

Sleep has a close association with the brain’s functions, including cognitive and emotional abilities. Lack of sleep decreases a person’s attention span, cognitive flexibility, and slows down the speed of their decision-making process.

Higher Risk for Cardiovascular Disease

Not having adequate sleep increases the abruption of the natural process of healing and restoration of our bodies to repair damages throughout the body. According to studies, people who lack sleep have higher rates of blood pressure and heart disease.

Increase in Weight Gain

Sleep deprivation increases the amount of a hormone called ghrelin and also decreases the number of hormones in our body that signal satiety or fullness. An increase in ghrelin leads to an increase in appetite, which often results in weight gain.

Immune System Damage

Sleeping fewer than 4 hours a day results in a decrease in the number of white blood cells responsible for immune function. These cells are also responsible for fighting off diseases and infections, and their decrease can have a harmful effect on our immune system.

Increase in Accidents

Sleep deprivation makes it difficult to concentrate, slows reaction time and makes people more prone to errors in activities such as driving, cycling, and operating machinery.

Sexual Health Effects

A study by the Journal of Sexual Medicine found that men who lacked sleep had a diminished sex drive and erectile dysfunction.

Higher Risk for Diabetes

Lack of sleep negatively affects the body’s ability to produce and regulate insulin, making the cells more resistant to insulin. This can lead to the development of type 2 diabetes.

Increase in Stress Levels

Sleep deprivation increases stress levels by overstimulating the body’s stress systems. This increase in stress levels can lead to irritability, anxiety, and difficulty focusing.

Overall Decrease in Quality of Life

Sleep deprivation leads to a general decline in one’s quality of life, including problems with concentration, mood swings, and poor physical health.

Sleep deprivation image

In conclusion, sleeping only four hours a day is highly detrimental to an individual’s health. Sleep is a critical component of our well-being, and it is vital that we get enough sleep every day to ensure the brain and body functions properly. Sleeping the recommended 7-8 hours of sleep can help to promote mental alertness, emotional stability, physical health, and overall well-being.

Health Risks of Sleeping 4 Hours a Day

Sleep is an essential part of our lives, and its importance cannot be overstated. Getting enough sleep helps our bodies recharge and refresh for the next day. However, not getting enough sleep can have adverse effects on our health. Sleeping for only four hours a day can result in significant health risks, such as:

1. Increased Risk of Obesity and Type 2 Diabetes

Studies have shown that inadequate sleep can lead to weight gain and obesity. Lack of sleep increases levels of the hormone ghrelin, which stimulates hunger. It also lowers the levels of leptin, a hormone that signals when you are full. Thus, people who sleep only four hours a day are more likely to overeat and gain weight, which can increase their risk of obesity and type 2 diabetes.

obesity type 2 diabetes

Obesity Statistics Numbers
Percentage of obese adults in the US 42.4%
Percentage of obese children and adolescents in the US 18.5%
Estimated number of Americans with type 2 diabetes 29.1 million

2. Increased Risk of Heart Diseases

Sleep deprivation can also increase the risk of heart diseases. It is associated with high blood pressure, which in turn increases the risk of heart attacks and strokes. People who sleep only four hours a day are more likely to suffer from these conditions than those who get the recommended 7-8 hours of sleep per day.

heart disease

3. Impaired Cognitive Functioning

Not getting enough sleep can also have adverse effects on our cognitive functioning. People who sleep for only four hours a day may experience difficulty concentrating, making decisions, and remembering things. They may also experience mood swings and feel more irritable and agitated than usual.

cognitive function

4. Increased Risk of Depression

Sleep and mood are closely linked. Lack of sleep can result in increased irritability, mood swings, and anxiety. People who sleep only four hours a day are at a higher risk of developing depression than those who get enough sleep.


Depression Stats Numbers
Percentage of Americans who experience depression 17.3%
Number of people with depression worldwide 300 million
Number of people with depression in the US 16.2 million

5. Increased Risk of Accidents

Lack of sleep can also increase the risk of accidents, both on the road and at work. When people are sleep-deprived, their reaction times are slower, and their judgment is impaired. People who sleep only four hours a day are more likely to experience accidents than those who get enough sleep.


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Sweet Dreams

Now that you know about those who sleep just four hours a day, remember to value your sleep and prioritize it in your daily routine. A good night’s sleep is not only beneficial for our physical health but also our mental well-being. Thanks for reading and be sure to visit us again soon for more interesting articles! Good night and sweet dreams.

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