Do you like sleeping? It’s hard to find a person who doesn’t enjoy a nice deep sleep. You lie on your bed covered with freshly cleaned bedding, breathe in the relaxing aroma, close your eyes, and drift off.
But this process is not so pleasurable for everyone. There are internal and external stressors and responsibilities that can deprive us of good sleep. Some may work night shifts, others may stay awake because their baby is crying the entire night, and others may simply be obsessed with scrolling through compelling videos on the Internet.
So instead of 7 or 8 hours, you may sleep only 4 or 6 hours a day. More commonly, people wake up during the night to go to the bathroom, have a glass of water, or are simply sweaty from the hot summer days. This impairs the quality of sleep and the next day, you’re too weary for even regular activities.
But what if you can’t help but sleep for only 4 hours per day? Your job may take too much time or other stressors deprive you of the optimal time for sleep. Read this article to unravel whether 4 hours of sleep per day is healthy for your body and mind. Here’s what science says.
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Think about the last time you slept for just 4 hours. For some people, it may be enough. They still feel invigorated enough and ready to commit to their daily tasks. This means you can survive with 4 hours of sleep every day. But the question is, is it healthy?
The National Sleep Foundation provides the following recommendations for the appropriate amount of sleep every day (3):
Sleeping less may be detrimental to your health and mental performance. You can try it for a few days, but you’ll gradually notice the negative effects of it.
You need healthy sleep in order to function well. However, sometimes you lack good sleep. No matter whether you’re sleeping for 4 hours per night intentionally or unintentionally, you’ll experience several negative effects:
This is just the tip of the iceberg as sleep deprivation leads to changes in your body:
It is not okay to sleep only 3 to 4 hours. From the previous segment, you’ve learned about the optimal time ranges of sleep for different people.
Doing it for a short period is one thing, but practicing short sleep all your life can put you at risk of serious health conditions such as:
You also need to recognize the difference between sleep deprivation and insomnia. The former means you can’t fall asleep no matter how hard you try while sleep deprivation entails consciously not finding time for good sleep.
Therefore, choosing to sleep for only 3 to 4 hours intentionally will impact the quality of your life. You won’t only feel tired, you could also end up with serious health conditions in the future. You need to analyze the main reasons why you sleep so little.
Some daily habits or lifestyle activities can impair your sleep. Making some changes can help with this, but if you regularly have difficulty sleeping, you should contact a healthcare provider for guidance.
Read more: 20 Benefits of Sleeping Naked for the Nudist Enthusiast to Enjoy Better Health, Sex, and More
Do you want to get the most out of good sleep? Then you need to sleep the appropriate number of hours. The optimal time is 7 to 9 hours in adults, but in terms of what is too little sleep, there is one simple answer – anything less than 7 hours of sleep is detrimental.
Getting less than 7 hours of sleep can lead to poor health, including high blood pressure, diabetes, depression, heart disease, stroke, and weight gain (2).
If you sleep too little from time to time, there’s no need to worry, as we all know how unpredictable life may be. However, a constant lack of sufficient sleep is negative for your health and mental abilities.
The short answer is no. Sleeping for 4 to 5 hours is not healthy. Some people claim 4-5 or 6 hours is enough for them, but they’re wrong. Here’s the reality: if you sleep for 4 to 5 hours daily, you gradually get used to the negative effects of sleep.
Training your body to sleep less is not a good option as your body needs more sleep than 5 hours. You may think that you’re adapting to being awake more, but in fact, you’re performing daily activities at a lower level.
Therefore, having 4 hours of sleep a night for a month, year, etc. is not healthy. Try to sleep for an adequate amount of hours that is compatible with your age.
Most people sleep in the same way – they collapse into bed, close their eyes, and if they’re lucky, remain that way for at least 7 hours every night. However, some people break up the slumber into two shifts.
This is called segmented sleep. It involves going to sleep at night, then waking up after a few hours, and going to bed again for a couple of hours during the day. It works well for some people to sleep for 4 hours twice a day.
However, there are mixed perspectives regarding this sleeping activity. Even though there hasn’t been much research on whether sleeping shifts are healthy or not, you should avoid this routine unless there is a valid reason for you to do so.
Of course, if you naturally sleep this way and feel okay with it, you can continue with this procedure. Doing it on purpose and waking up in the middle of the night can impact your circadian rhythms – the internal clock that controls processes in your body (18).
The science of sleeping stages is engaging. Interestingly, if you neglect one of the phases, you’re more likely to feel like a squeezed lemon the next day. Check out the main 4 sleeping cycles that you hopefully experience every night:
Your body needs to move through all these cycles several times each night. If you have a full sleep, you generally move around four to six times in all 4 cycles. But with only 4 hours of sleep, you’ll only cycle through these stages twice.
You now have all the knowledge about optimal time sleep ranges and you’re ready for the changes. The good news is that there are healthy and simple ways to promote better sleep and also make your well-being more satisfactory. In simple terms, you look better, feel better, and perform better.
Here are the top 6 tips for better sleep that you should implement today (14):
Implementing these essential steps will help you achieve faster and healthier sleep.
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Good sleep can be impactful and enjoyable at the same time. You feel rested and get all the essential benefits from it. Therefore, you should change your habits and diet, engage in physical activity, and solve any stressful issues. Finally, with good sleep you:
Healthy sleep can help provide all these benefits. Your life will get better if you feel perkier and invigorated to complete easy and difficult tasks.
Read more: Is 4 Hours of Sleep Enough? Here’s What Science Says
The general rule says that adults need to sleep for at least 7 hours per day. Therefore, sleeping for just 4 hours is too little for the proper functioning of your body and brain. Sleeping for 4 hours on a regular basis can lead to several health conditions, including depression, fatigue, mood swings, stroke, weight gain, high blood pressure, and heart disease. Therefore, you should try your best to stick to healthy sleeping time ranges.
You can function on 3 hours of sleep, but not at your best levels. If it’s a one-time thing, it won’t put you at any serious health risks, but sleeping for 3 hours daily will negatively impact your well-being. Scientists claim that an average person needs 7 to 9 hours for proper functioning.
Both options are not appealing, but if you’re in such a situation where you need to select one of them, getting 2 hours of sleep is better than no sleep at all. Why? During sleep, your body replenishes hormones and repairs its tissues. Skipping a night’s sleep can impair your mental function and your mood may decline the next day.
It seems like one night of sleep loss isn’t a big deal. However, this will disrupt your day-to-day physical, mental, and emotional well-being. The most common symptom of one night of sleep deprivation is raised levels of anxiety and mood swings. Therefore, if you have the chance, you should sleep at least a little bit to partially avoid these problems.
Sleep is a vital physiological process that is crucial for overall health and well-being. While individual sleep needs may vary, consistently getting only 4 hours of sleep poses significant risks to three aspects – cognitive function, physical health, and mental well-being.
Research has indicated that insufficient sleep is associated with cognitive impairment, which affects attention, memory, and decision-making capabilities (15). Sleep deprivation, even for a single night, can lead to increased lapses in attention and slower reaction times, which is comparable to those observed with alcohol intoxication.
Sleeping for less than 4 hours has been proven to demonstrate a strong link between inadequate sleep and mood disturbances, such as irritability, anxiety, and an increased likelihood of developing mood disorders. Chronic sleep deprivation has been associated with an elevated risk of developing depression and other mental health issues. (9, 1)
Chronic sleep deprivation is also linked to an increased risk of various health problems, such as obesity, diabetes, and cardiovascular diseases. The immune system is also compromised by insufficient sleep, which can lead to a higher susceptibility to infections. (8)
Studies have demonstrated that adequate sleep is essential for memory consolidation, a process where the brain forms and stores memories. A lack of sufficient sleep can impair both short-term and long-term memory functions. (13)
Sleep plays an important role in the regulation of hormones that are responsible for appetite and metabolism, such as leptin and ghrelin. Insufficient sleep disrupts these hormonal balances, which contributes to weight gain and metabolic irregularities.
While occasional sleep disruptions may be inevitable, consistently obtaining only 4 hours of sleep is not worth the associated risks. The scientific evidence overwhelmingly supports the importance of adequate sleep for subsistence and well-being.
Feeling better with only 4 hours of sleep may be subjective, and while short-term benefits may be perceived, it’s essential to understand the potential long-term consequences of inadequate sleep.
In situations of sleep deprivation, the body releases stress hormones such as adrenaline and cortisol, which provide a temporary boost in alertness and energy. This boost can lead to a short-term feeling of increased wakefulness. Sleeping to improve your posture, while not sustainable, may contribute to long-term health issues. (5)
During the initial period of wakefulness, individuals may experience a surge in alertness due to the body’s attempt to adapt to the sleep deficit. This boost is often short-lived, and cognitive and physical performance declines as sleep debt accumulates. (11)
Some studies have suggested that sleep-deprived individuals may exhibit enhanced selective attention to certain tasks, potentially giving the illusion of improved performance. However, this improvement is task-specific and does not reflect overall cognitive function or well-being. (6)
Individuals may perceive feeling better with limited sleep due to a subjective assessment of their performance and mood. Objective measures, such as cognitive tests and physiological markers, often reveal the negative impact of insufficient sleep. (16)
Prolonged wakefulness increases the risk of microsleeps – brief episodes of unintended sleep that last for a few seconds. Microsleeps can occur without the individual’s awareness, which can pose dangers in situations requiring sustained attention, such as driving. (20)
While there may be a temporary perception of feeling better with only 4 hours of sleep, evidence strongly points to the adverse long-term effects on physical health, cognitive function, and overall well-being. Consistent inadequate sleep is not a sustainable or healthy practice. Sleeping with your legs elevated can also help with postural health.
Occasionally, missing a night of sleep may be inevitable for various reasons, but understanding the physiological consequences is essential for assessing the short- and potential long-term impacts.
Some of the major risks of continuous sleep deprivation include:
It is often cited that a single night of total sleep deprivation leads to cognitive impairment, affecting attention, memory, and decision-making abilities. Your reaction times may slow down, and lapses in attention can pose risks in activities that require concentration.
One night of sleep deprivation can induce mood disturbances, which include irritability, heightened emotional reactivity, and increased feelings of stress. These mood changes are a result of alterations in neurotransmitter levels influenced by sleep.
Sleep deprivation affects hormonal regulation, which leads to increased levels of stress hormones such as cortisol. Hormonal imbalances can contribute to metabolic disruptions and heightened stress responses (4)
While the body can recover from one night of missed sleep, it is not ideal, particularly for prolonged periods, for your overall health and well-being. The short-term cognitive and mood disturbances, in addition to the potential impacts on physical health, highlight the importance of prioritizing regular and sufficient sleep for optimal functioning.
Chronic sleep deprivation poses more significant risks and should be avoided for maintaining your health in the long term. Feeling sleepy after a workout may also be an indicator of the body’s need for adequate rest.
Sleeping well is essential for the proper functioning of your body. It provides many benefits, from regulated weight to the prevention of serious health conditions.
Is 4 hours of sleep enough? Here’s what science says. In this article, you’ve learned that the optimal sleeping time is 7 to 8 hours for adults. This means that 4 hours of sleep is not enough for your well-being.
Sleeping for 4 hours is dismissive as it may provoke certain health conditions, such as depression, weight gain, fatigue, problems with memory and performance, heart disease, high blood pressure, and stroke.
You need to keep tabs on your daily habits, including your dieting and physical activity, if you want to sleep better. In addition, creating a relaxing atmosphere without electronic devices will increase your chances of falling asleep more quickly.
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