what causes us to be tired during the day 2
what causes us to be tired during the day 2

Have you ever wondered why we often feel tired during the day, no matter how much sleep we get at night? It’s a common phenomenon that many of us experience, and there are several factors that can contribute to this fatigue. From our daily habits and routines to underlying health issues, understanding the causes of daytime tiredness can help us combat it effectively. In this article, we’ll explore some of the most common reasons behind our daytime fatigue and offer practical tips for boosting our energy levels throughout the day. So, let’s dive in and uncover the secrets to banishing that midday slump!

Physical Causes

Lack of Sleep

One of the most common physical causes of daytime tiredness is simply not getting enough sleep. Many of us lead busy lives and often prioritize other activities over rest. However, consistently depriving ourselves of the recommended amount of sleep can have serious consequences on our energy levels. Adults typically need between seven and nine hours of sleep each night, while teenagers require around eight to ten hours, and younger children need even more. When we consistently fail to meet these sleep needs, it can result in excessive daytime sleepiness.

Sleep Disorders

Sleep disorders can also contribute to daytime tiredness. Conditions like insomnia, sleep apnea, restless legs syndrome, and narcolepsy can disrupt our sleep patterns and prevent us from achieving restful, quality sleep. These disorders can have various causes, such as hormonal imbalances, neurological issues, or physical obstructions in the airway. Seeking medical help and getting a proper diagnosis is essential for managing these sleep disorders and reducing daytime fatigue.

Medical Conditions

Certain medical conditions can leave us feeling exhausted during the day. Conditions such as anemia, thyroid problems, diabetes, and heart disease can all contribute to fatigue. These conditions affect the body’s ability to function optimally, leading to a lack of energy. It is important to consult with a healthcare professional if we suspect an underlying medical issue contributing to our tiredness.

Poor Nutrition

The food we consume plays a significant role in our overall energy levels. A diet lacking in essential nutrients can leave us feeling exhausted and lethargic. Consuming excessive amounts of sugary and processed foods can cause spikes and crashes in our blood sugar levels, leading to fatigue. It is important to maintain a balanced diet that includes plenty of fruits, vegetables, lean proteins, whole grains, and healthy fats to provide sustained energy throughout the day.


Dehydration can manifest as fatigue and low energy levels. When we don’t consume enough fluids, our body’s cells are deprived of the necessary hydration to carry out their functions efficiently. Mild dehydration can result in decreased cognitive function, decreased alertness, and increased fatigue. To stay properly hydrated, it is important to drink an adequate amount of water throughout the day and limit the consumption of dehydrating substances such as caffeine and alcohol.

Psychological Causes


Stress is a major contributor to daytime tiredness. When we experience stress, our bodies release hormones such as cortisol, which can disrupt our sleep patterns and make it difficult to relax and unwind. Chronic stress can lead to long-term fatigue and exhaustion. It is important to find healthy ways to manage stress, such as engaging in relaxation techniques, exercise, and seeking support from friends, family, or a therapist.


Anxiety can cause excessive worry and racing thoughts, making it difficult to fall asleep and stay asleep. People with anxiety disorders may experience heightened levels of arousal, leading to a constant state of alertness and exhaustion. Seeking professional help and employing strategies such as cognitive-behavioral therapy and relaxation techniques can aid in managing anxiety and improving sleep quality.


Depression can cause significant fatigue and a lack of energy. Feelings of sadness, hopelessness, and a loss of interest in activities often accompany depression, making it challenging to muster the motivation to engage in daily tasks. This mental health condition can disrupt sleep patterns and contribute to sleep disturbances, resulting in excessive sleepiness throughout the day. Seeking professional help and receiving appropriate treatment, such as therapy and medication, can provide relief from the symptoms of depression and improve overall energy levels.

Emotional Disturbances

Emotions such as grief, anger, and stress can affect our quality of sleep and lead to daytime tiredness. Emotional disturbances can significantly impact our ability to fall asleep or maintain restful sleep, resulting in fatigue the following day. It is important to address these emotional disturbances through healthy coping mechanisms, therapy, and support systems to help regulate sleep patterns and improve energy levels.

What Causes Us To Be Tired During The Day?

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Lifestyle Factors

Sedentary Lifestyle

Leading a sedentary lifestyle, characterized by limited physical activity, can contribute to daytime tiredness. Lack of exercise can lead to poor circulation, muscle weakness, and decreased overall energy levels. Incorporating regular physical activity into our daily routine can boost our energy levels, improve sleep quality, and enhance overall well-being.

Inadequate Physical Activity

Similar to a sedentary lifestyle, inadequate physical activity can lead to low energy levels. Not engaging in regular exercise can result in poor cardiovascular health, a weakened immune system, and reduced stamina. Incorporating activities such as walking, jogging, cycling, or engaging in sports can help combat daytime tiredness and increase overall energy levels.

Excessive Caffeine Consumption

While caffeine may provide a temporary energy boost, excessive consumption can lead to a dependency and disrupt sleep patterns. Consuming large amounts of caffeine, especially later in the day, can interfere with falling asleep and result in daytime tiredness. It is advisable to limit caffeine intake, particularly in the afternoon and evening, and be mindful of the potential effects it may have on sleep quality.

Alcohol and Substance Abuse

Alcohol and substance abuse can have a significant impact on sleep patterns and contribute to daytime tiredness. Alcohol may initially induce drowsiness, but it can disrupt the quality of sleep and lead to frequent awakenings throughout the night. Substance abuse can also interfere with regular sleep patterns and result in excessive daytime fatigue. Seeking professional help and support for managing alcohol and substance abuse is essential for improving sleep quality and overall well-being.

Environmental Factors

Poor Indoor Air Quality

A poorly ventilated or polluted indoor environment can affect sleep quality and result in daytime tiredness. Indoor air pollutants, such as dust, mold, and chemicals, can irritate the respiratory system, leading to breathing difficulties and sleep disturbances. Ensuring proper ventilation and taking measures to improve indoor air quality, such as using air purifiers and regularly cleaning, can help promote better sleep and reduce daytime tiredness.

Temperature Extremes

Extreme temperatures can disrupt sleep and contribute to daytime fatigue. Sleep is often disturbed when it is too hot or too cold, making it challenging to achieve a restful sleep. Maintaining a comfortable room temperature, using appropriate bedding, and utilizing fans or air conditioning can aid in creating an optimal sleep environment and improve daytime energy levels.

Noise Pollution

Excessive noise can interfere with sleep and result in tiredness during the day. Noisy environments can disrupt the ability to fall asleep and cause frequent awakenings throughout the night. Employing soundproofing techniques, using earplugs, or utilizing white noise machines can help eliminate or minimize disruptive sounds and promote better sleep quality.

Inadequate Lighting

Lighting plays a crucial role in regulating our circadian rhythm and promoting healthy sleep patterns. Insufficient exposure to natural light during the day and excessive exposure to artificial light in the evening can disrupt our body’s internal clock and lead to daytime sleepiness. Ensuring adequate exposure to natural light during the day and minimizing exposure to bright screens, such as smartphones, tablets, and televisions, before bedtime can aid in maintaining a healthy sleep-wake cycle and increasing daytime alertness.

What Causes Us To Be Tired During The Day?

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Work-related Factors

Long Working Hours

Working long hours without sufficient breaks or rest periods can lead to fatigue and decreased productivity. Continuously pushing ourselves beyond our limits without proper rest can result in burnout and chronic fatigue. It is important to prioritize work-life balance, set boundaries, and practice effective time management techniques to prevent excessive fatigue.

Shift Work

Shift work, particularly irregular or rotating shifts, can disrupt the body’s natural sleep-wake cycle and contribute to daytime tiredness. Constantly changing work schedules disrupt the body’s internal clock and make it difficult to achieve consistent, quality sleep. When experiencing shift work, implementing strategies such as maintaining a regular sleep schedule, creating a sleep-friendly environment, and engaging in relaxation techniques can help mitigate the effects of shift work on sleep patterns.

Monotonous or Repetitive Tasks

Performing monotonous or repetitive tasks at work can contribute to fatigue and reduced alertness. These tasks often require minimal mental or physical stimulation, which can lead to decreased energy levels throughout the day. Taking regular breaks, engaging in activities that require mental or physical engagement, and implementing strategies to add variety or new challenges to these tasks can help combat tiredness and increase overall productivity.

Workplace Stress

High levels of stress in the workplace can lead to exhaustion and decreased energy levels. Demanding workloads, challenging deadlines, and a lack of support can contribute to burnout and chronic fatigue. Seeking support from supervisors or colleagues, practicing stress management techniques, and maintaining a healthy work-life balance can help alleviate workplace stress and improve overall well-being.

Sleep-related Factors

Interrupted Sleep

Frequent awakenings or interruptions during sleep can prevent us from achieving restful sleep and result in daytime drowsiness. Factors such as noise disturbances, discomfort, medical conditions, or even a disruptive sleep environment can contribute to interrupted sleep. Identifying and addressing these interruptions, such as using earplugs, adjusting the sleep environment, or seeking medical advice if necessary, can help enhance the quality of sleep and alleviate daytime tiredness.

Poor Sleep Quality

Even if we manage to get an adequate amount of sleep, the quality of sleep can still impact our daytime energy levels. Factors such as sleep apnea, restless legs syndrome, or even an uncomfortable mattress can lead to poor sleep quality and leave us feeling tired during the day. Seeking medical help for diagnosing and treating any sleep disorders and ensuring a comfortable sleep environment can improve sleep quality and reduce daytime fatigue.

Sleep Apnea

Sleep apnea is a sleep disorder characterized by pauses in breathing during sleep, resulting in multiple awakenings throughout the night. These interruptions prevent restful sleep and often lead to excessive daytime sleepiness. Seeking medical attention and receiving appropriate treatment, such as continuous positive airway pressure (CPAP) therapy, can help manage sleep apnea and improve overall energy levels.

Restless Legs Syndrome

Restless legs syndrome (RLS) is a neurological disorder characterized by an irresistible urge to move the legs, often accompanied by uncomfortable sensations. These sensations typically worsen at rest or during the evening, making it challenging to fall asleep and maintain restful sleep. Managing RLS symptoms through lifestyle modifications, medication, and relaxation techniques can help alleviate sleep disturbances and reduce daytime tiredness.

What Causes Us To Be Tired During The Day?

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Age-related Factors

Infants and Children

Infants and young children often require more sleep than adults, and a lack of sufficient sleep can lead to daytime tiredness. Factors such as growth spurts, teething, illness, or changes in routine can disrupt sleep patterns in this age group. Establishing consistent sleep schedules, providing a comfortable sleep environment, and addressing any underlying medical conditions can help optimize sleep for infants and children, reducing daytime fatigue.


During adolescence, teenagers experience changes in their circadian rhythm, often resulting in a shift toward later bedtimes and waking times. This natural shift, combined with early school start times and increased academic and social demands, can compromise their sleep quality. Insufficient sleep during the teenage years can lead to daytime sleepiness, difficulty concentrating, and reduced academic performance. Encouraging consistent sleep schedules, limiting screen time before bed, and educating teenagers about the importance of sleep can improve their overall energy levels.

Middle-aged Adults

Middle-aged adults may face unique sleep challenges, such as an increased prevalence of medical conditions, menopause (in women), or work and family responsibilities. Hormonal changes, such as those experienced during menopause, can disrupt sleep patterns and contribute to daytime tiredness. Addressing underlying medical conditions, adjusting sleep routines, and employing relaxation techniques can help middle-aged adults maintain healthy sleep habits and combat daytime fatigue.

Elderly Individuals

As individuals age, changes in sleep patterns become more prevalent. Older adults may experience difficulty falling asleep, staying asleep, or waking up earlier than desired. Age-related conditions, such as chronic pain, sleep disorders, or medication side effects, can further disrupt sleep quality. By creating a sleep-friendly environment, practicing good sleep hygiene, and seeking medical help for any underlying sleep disorders, elderly individuals can improve their sleep quality and reduce daytime tiredness.

Medication and Substance Use

Prescription Medications

Certain prescription medications can cause daytime tiredness as a side effect. Medications such as sedatives, antidepressants, antihistamines, and some pain medications can induce drowsiness and affect alertness. It is important to discuss any concerns about medication side effects with a healthcare professional, who may be able to adjust dosages or provide alternative treatment options that have fewer impacts on energy levels.

Over-the-counter Medications

Similarly, over-the-counter medications can contribute to daytime tiredness. Common cold and allergy medications often contain ingredients that can induce drowsiness, leading to fatigue during the day. Reading medication labels carefully and opting for non-drowsy alternatives can help minimize the impact on energy levels.


Alcohol is known to have sedative effects, making it initially seem like it promotes sleep. However, alcohol disrupts sleep architecture and can lead to fragmented and poor-quality sleep. This can result in daytime drowsiness and decreased cognitive function. Limiting alcohol consumption, particularly in the hours leading up to bedtime, can help improve sleep quality and reduce daytime fatigue.

Illicit Drug Use

Illicit drugs, such as cocaine, methamphetamine, and opioids, can severely impact sleep patterns and contribute to excessive daytime sleepiness. These substances can disrupt the body’s natural sleep-wake cycle, leading to irregular sleep patterns and decreased overall energy levels. Seeking help for drug addiction and participating in substance abuse recovery programs is essential for improving sleep quality and overall well-being.

What Causes Us To Be Tired During The Day?

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Medical Treatments and Procedures


Chemotherapy, a common cancer treatment, often leads to fatigue as a side effect. The powerful medications used in chemotherapy can affect the body’s energy levels, leading to ongoing tiredness and decreased physical and mental stamina. It is important to communicate with healthcare providers about chemotherapy-related fatigue and discuss strategies to manage and cope with this side effect.

Radiation Therapy

Similar to chemotherapy, radiation therapy can lead to fatigue in cancer patients. The energy-draining effects of radiation treatments may vary depending on the location and intensity of radiation. Discussing fatigue symptoms with healthcare providers and implementing self-care strategies, such as proper nutrition, hydration, and pacing activities, can help manage fatigue and improve quality of life during radiation therapy.


Recovering from surgery requires a significant amount of energy, and it is not uncommon to experience tiredness during the healing process. The body’s focus during this time is on repairing and regenerating tissues, which can be physically and mentally draining. It is important to follow post-operative instructions, rest when necessary, and gradually increase activities as advised by healthcare professionals to aid in recovery and combat fatigue.

Recovery from Illness

Recovering from an illness or infection can be physically exhausting. The body’s immune response requires energy, and during this time, it is common to experience fatigue and prolonged tiredness. Prioritizing rest, providing the body with proper nutrition and hydration, and gradually increasing physical activities can help support the recovery process and restore energy levels.

Other Factors


Genetics can play a role in our individual differences in energy levels and susceptibility to fatigue. Some individuals may have naturally higher or lower energy levels due to genetic predispositions. While we cannot change our genetic makeup, understanding and accepting our own energy levels can help us adopt strategies to manage fatigue and optimize our well-being.

Hormonal Changes

Hormonal changes, such as those experienced during menstruation, pregnancy, or menopause, can contribute to fatigue and tiredness during the day. Fluctuations in hormone levels can disrupt sleep patterns and decrease overall energy levels. Practicing good sleep habits, engaging in regular physical activity, and managing stress levels can help alleviate the impact of hormonal changes on daytime tiredness.


Pregnancy often leads to increased fatigue and tiredness due to hormonal changes, increased metabolic demands, and physical discomfort. During pregnancy, the body goes through numerous physiological changes, and as a result, energy levels may fluctuate. Adequate rest, proper nutrition, and seeking support from healthcare professionals can help manage fatigue and promote a healthy pregnancy.


Menopause is a natural stage in a woman’s life that often coincides with changes in sleep patterns and increased fatigue. Hormonal fluctuations, hot flashes, and night sweats can disrupt sleep, leading to daytime tiredness. Utilizing strategies such as maintaining a cool sleep environment, practicing relaxation techniques, and seeking medical advice for managing menopause symptoms can help alleviate fatigue and improve sleep quality.

In conclusion, there are numerous factors that can contribute to feeling tired during the day. Physical causes, such as lack of sleep, sleep disorders, medical conditions, poor nutrition, and dehydration, can all play a significant role. Psychological causes, including stress, anxiety, depression, and emotional disturbances, can also contribute to daytime tiredness. Lifestyle factors such as a sedentary lifestyle, inadequate physical activity, excessive caffeine consumption, and alcohol and substance abuse can impact energy levels. Environmental factors such as poor indoor air quality, temperature extremes, noise pollution, and inadequate lighting can disrupt sleep and contribute to fatigue. Work-related factors, sleep-related factors, age-related factors, medication and substance use, medical treatments and procedures, genetics, hormonal changes, pregnancy, and menopause can also affect daytime energy levels. By understanding these various causes and implementing strategies to address them, we can better manage tiredness and experience higher levels of energy throughout the day.

What Causes Us To Be Tired During The Day?

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Amanda Bryant
Hello! My name is Amanda Bryant, and I am thrilled to be your go-to Chiropractic and sleep expert here at sleepingexpert.info. With years of experience and a passion for helping individuals achieve a restful night's sleep, I am dedicated to providing you with insightful tips and techniques to promote optimal sleep health. As a respected chiropractor, I have earned the trust and credibility within the industry. I hold numerous prizes and awards, recognizing my expertise in the field. With a deep understanding of the crucial relationship between quality sleep and overall well-being, my goal is to empower you with knowledge that can transform your sleep habits and enhance your life. Throughout my career, I have had the privilege of assisting countless individuals in their journey towards improved sleep. Through my dedication and commitment, I have witnessed firsthand the positive impact that a good night's rest can have on one's physical and mental health.