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Why Am I Sleeping Too Much All of a Sudden? Causes and Effects

Published: Nov 22, 2023
Updated: Nov 25, 2024
Why Am I Sleeping Too Much All of a Sudden? Causes and Effects
In this article
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    9 min

    Have you noticed a shift in your sleep pattern lately and find yourself asking, “Why am I sleeping too much all of a sudden?“. A sudden increase in sleep duration is attributed to several different factors.

    In this article, we’ll explore the puzzling phenomenon of sudden excessive sleep and some of the possible causes and effects of sleeping too much.

    Key Takeaways
    Excessive daytime sleepiness can be attributed to a lack of sleep, obstructive sleep apnea, narcolepsy, restless leg syndrome, insomnia, medications, or lifestyle factors.
    Symptoms of excessive tiredness include an urge to take a nap during the day, difficulty staying awake, difficulty waking up, long sleep duration, and feeling tired at work.
    You may be sleeping more than usual all of a sudden if you have sleep debt, recovering from an illness, or have an underlying sleep disorder.
    You may be sleeping too much if you are sleeping more than the recommended nine hours a day on a daily basis.
    A regular sleep schedule, a comfortable sleep environment, a relaxing bedtime routine, avoiding the use of electronic devices before bedtime and the use of an alarm clock can help prevent oversleeping.

    Why Do I Sleep So Much During The Day?

    why do i sleep so much during the day

    There are many reasons why you may experience excessive daytime sleepiness. Excessive daytime sleepiness refers to a persistent and overwhelming need to fall asleep during the day, even when you get a good night’s sleep. 

    Some of the common causes of excessive sleepiness during the day include lack of sleep, obstructive sleep apnea, narcolepsy, restless leg syndrome, insomnia, medications, lifestyle factors such as alcohol and caffeine, and shift work [1].

    Symptoms of Excessive Sleepiness

    symptoms of excessive sleepiness shuteye

    Excessive sleepiness sometimes referred to as hypersomnia, manifests through various symptoms that can significantly impact daily life. Individuals suffering from this condition often experience persistent drowsiness throughout the day, despite having a full night’s sleep.

    This drowsiness is not just about feeling tired; it’s an overwhelming urge to go back to sleep at inappropriate times, such as during work or in social settings.

    The common symptoms of hypersomnia are:

    • Struggling to stay awake during the day
    • An urge to nap throughout the day
    • Feeling sleepy at work
    • Long sleep duration
    • Difficulty waking up

    These symptoms may also lead to increased irritability, anxiety, and difficulties with concentrating or focusing.

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    Why Am I Suddenly Sleeping More Than Usual?

    why am i suddenly sleeping more than usual

    If you’re suddenly sleeping more than usual, there’s normally a reason for it.

    One reason could be sleep debt accumulation, which occurs when you are consistently getting too little sleep and your body tries to make up for it.

    Another possibility is a temporary increase in sleep needs, which can happen during periods of illness or recovery. You shouldn’t worry too much if you’re taking a nap during the day when you’re ill. 

    Underlying medical conditions, such as sleep disorders or hormonal imbalances, also play a part in causing increased sleep during the day.

    It’s crucial to identify the reasons behind your sudden excessive sleep to ensure your overall health and well-being.

    How Much Sleep is Too Much Sleep?

    how much sleep is too much sleep

    To determine if you’re oversleeping, assess whether you’re consistently sleeping more than the recommended seven to nine hours of sleep per night. Oversleeping refers to sleeping more than nine hours in a night. So, if you are consistently sleeping over nine hours at night, you may be getting more than necessary.

    It may also indicate a potential underlying health issue. Keeping track of the amount of sleep you get can help you to ensure that you stop yourself from excessively sleeping. Try using a sleep diary or a sleep-tracking app such as ShutEye® to do so.

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    Excessive Sleep and Feeling Tired

    Sometimes despite the increased sleep, fatigue persists. You could get plenty of rest but still find yourself feeling lethargic. This feeling can be both frustrating and confusing, but several factors could contribute to this ongoing fatigue. Consider the following possibilities:

    • Intense exercise or illness: Engaging in strenuous physical activity or recovering from an illness can contribute to feelings of fatigue, even if you’re getting enough sleep.
    • Underlying medical conditions: Certain medical conditions, such as thyroid problems or chronic fatigue syndrome, can cause persistent fatigue despite nine hours of healthy sleep.

    5 Tips to Avoid Sleeping Too Much

    Sleeping too much can be a cause for concern if it happens on a frequent basis. In cases like these, you want to speak to your healthcare provider and determine if it is the result of an underlying medical condition.

    Otherwise, you can avoid the occasional oversleeping by focusing on building healthy sleep habits and practicing good sleep hygiene. Although it’s not a cure, it can help you feel better and get better quality sleep.

    Here are 5 tips to help you:

    • Have a regular sleep schedule: Having a consistent sleep schedule helps you to fall asleep and wake up at the same time every day, even on the weekends. It regulates your body’s circadian rhythm so that you can wake up feeling more refreshed and less tired.
    • Create a comfortable sleep environment: Ensure that you have a relaxing sleep environment by keeping it dark, quiet, and cool. You may also use a white noise machine or aromatherapy to help relax your mind and sleep better. A good quality sleep will reduce the likelihood of oversleeping.
    • Have a relaxing bedtime routine: Create a relaxing routine that will help you to decompress and get ready for a good night’s sleep. Taking a warm bath, meditating, doing light stretches or listening to music are possible activities to include in your routine.
    • Avoid using electronic devices before bed: Blue light emitting from devices can interfere with your body’s ability to produce melatonin, the sleep hormone. It can cause you to feel groggy and oversleep the next morning.
    • Use an alarm clock: Using an alarm clock can help you to get out of bed and avoid sleeping too much. Try choosing an alarm that is gentle and wakes you up naturally to avoid snoozing repeatedly. ShutEye® for example has a smart alarm clock feature that wakes you up gently.

    Conclusion

    In conclusion, sudden excessive sleep can be a puzzling phenomenon, leaving you feeling tired despite getting more rest. Various factors, such as changes in sleep patterns and underlying sleep disorders, can contribute to this issue.

    To prevent sleeping too much, you need to keep track of your sleeping patterns and habits. One way to do so is by using the sleep-tracking app, ShutEye®. ShutEye® is a science-backed sleep app that tracks your sleep cycle to help you improve nighttime sleep.

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    FAQ

    If it happens occasionally, it is not anything to be concerned about. Perhaps, it's your body's way of recovering from a lack of sleep. However, if it happens frequently, this could be a sign of an underlying issue such as a sleep disorder or a medical condition. In this case, you might want to consider seeking help from a healthcare professional or sleep specialist.

    Certain deficiencies such as Vitamin D, Vitamin B12 or iron deficiency can lead to excessive fatigue, leading to a need for more sleep. It's worth taking a blood test to determine if you possibly have any vitamin deficiency.

    Sudden sleepiness is caused by various factors such as inadequate sleep, lifestyle changes, sleep disorders, or certain medications. Consult a healthcare professional if it starts to affect your quality of life.
    About authors
    Jessica Brown, a 29-year-old freelance copywriter passionate about human nature and deeply committed to promoting sleep and mental health awareness. Jessica holds a Master of Arts in Literary Studies from the National University of Singapore and a Bachelor's in Biology from the University of Cambridge.
    Siti Amirah
    Reviewer
    Amirah is a content writer passionate about topics related to mental health and wellness. Recently, she delved into the realm of sleep health, spurred by a personal recognition of her subpar sleep habits and a desire for improvement. Amirah holds a Bachelor’s Degree in International Communication Studies from the University of Nottingham.

    Singhealth (2024) Excessive Daytime Sleepiness [online]. Available at: https://www.singhealth.com.sg/patient-care/conditions-treatments/excessive-daytime-sleepiness