You Slept 8 Hours… So Why Do You Still Feel Exhausted?

The surprising reasons you wake up tired—and how to finally feel refreshed.

FUNCTIONAL HEALTH

Hira S.F.

7/29/20265 min read

Introduction

You followed all the right steps to get your recommended eight hours of sleep. You got to bed on time. You stayed away from Netflix as well as turned off your smartphone for the night. But you still feel unrested and tired when the alarm rings. If you have the same problem yourself, it may not be that you need to sleep more. In fact, it may be what your body actually needs is a different quality of sleep. And that's a common problem.

Quality and Quantity of Sleep Are Not the Same Thing

Many people think that just getting eight hours of sleep means that they will feel fresh and rested after waking up. It is not always the case. It is important to remember that the number of hours spent sleeping in fact matters less than the quality of sleep.

Just think about charging your phone overnight. If the charging cable isn’t in good condition, plugging the phone for eight hours will not fully recharge the battery. When it comes to sleep, the same principle works.

Your brain goes through different stages of sleep at night. Deep sleep is the most restorative stage, allowing the body to heal tissue, improve immunity, and replenish energy. REM stage is also essential for memory processing, knowledge, and emotion management. You will not feel fresh and rejuvenated in the morning without one of these sleep stages.

Frequent disruptions may stop your body from going through the necessary stages of sleep. You may have no recollection of waking at all because these interruptions may last only seconds. However, they can make you feel as if you had hardly slept.

Hidden Reasons You Feel Tired in the Morning

Sometimes, the reason for waking up tired is quite simple, such as a too warm bedroom, noise from traffic nearby, snoring partner or choosing to check your phone right after waking up.

Your everyday routine matters as well. Your body follows an internal clock, the ‘circadian rhythm’, that regulates sleepiness and alertness. If you go to sleep and wake up at different times, you might disrupt your circadian rhythm and, consequently, sleep difficulties.

The fast-paced modern age occupies our brain with all kinds of responsibilities: work duties, family issues, financial obligations, etc. And even when we fall asleep, our brain may repeat conversations or plan tomorrow's tasks.

Picture yourself sending work-related emails until 11 p.m. and getting into bed after that while thinking of tomorrow's meeting. Your body can rest, but the brain is still in the daytime mode. A high level of cortisol, the main stress hormone, can prevent us from entering deep sleep, which is vital for recovering from stress.

Fortunately, a good night routine can help. Activities such as reading, stretching, relaxing, listening to music or switching off gadgets an hour before bedtime allow the brain to understand that it is time to get ready for sleep.

Now let’s talk about gadgets, as they deserve special attention.

Smart gadgets produce blue light that decreases the level of melatonin, the hormone responsible for sleep preparation. At the same time, news, social networks, or videos that many of us consume via our gadgets do not allow our brain to make the transition to sleep.

Many sleep experts advise not using any gadget at least half an hour before going to bed.

When Fatigue Could Be a Sign of a Health Condition

Sometimes inadequate sleeping habits are not the actual problem.

Continuous fatigue can be due to an underlying illness. A well-known case is obstructive sleep apnea, which is the condition in which a person’s breathing stops momentarily while he or she is sleeping. This could lead to awakening the brain in order to help it continue breathing but interrupts the normal sleeping process.

Fatigue can also result from the deficiency of iron, vitamin B12, or vitamin D, disorders connected with the thyroid gland, diabetes and certain drugs, along with mental disorders like anxiety and depression.

Easy Habits That Can Make You Feel Better in the Morning

Certain habits during the day can also affect the quality of sleep.

Coffee is a great way to gain energy for a short period of time, however its consumption at night can interfere with deep sleep. Similarly, alcohol can help falling asleep faster but the quality of sleep will suffer anyway.

Physical activities help one to feel better. For example, walking, biking, gardening, help stay with the body’s sleeping cycle and improve the quality of sleep.

Your bedroom's atmosphere should be taken into account as well. A dark, cool, and quiet environment is beneficial to sleeping at night.

When to See a Doctor

It’s quite common to feel tired due to stress, sickness, or partying, but the problem arises when fatigue becomes the norm for an individual.

If you've been getting adequate sleep for a particular period of time but are still feeling exhausted, and if your fatigue is having an impact on your work, driving, and life in general, perhaps it's a good idea to consult a doctor in order to find the reason for this condition. A simple blood test or analysis of your sleep pattern may reveal the cause, and treat many sleep disturbances.

Rather than pondering on "Am I sleeping enough?" ask yourself, "Am I sleeping well?" If you want to improve your sleep over time, you must have a regular sleep schedule; avoid staring at screens in the evenings; cope with stress, keep yourself physically active and organize your bedroom to be as comfortable as possible.

Your body doesn’t keep track of how many hours you sleep. Instead, it considers the specific benefits of the hours spent asleep in terms of recuperation. So next time you sleep for long hours and wake up feeling lethargic, don’t think that you just need to sleep even more. Often, the solution comes in terms of better sleep quality.

References

  1. American Academy of Sleep Medicine (AASM). Healthy Sleep Resources and Adult Sleep Recommendations.

  2. Centers for Disease Control and Prevention (CDC). About Sleep. https://www.cdc.gov/sleep

  3. National Heart, Lung, and Blood Institute (NHLBI). Sleep Deprivation and Deficiency. https://www.nhlbi.nih.gov

  4. National Institute of Neurological Disorders and Stroke (NINDS). Brain Basics: Understanding Sleep. https://www.ninds.nih.gov

  5. National Library of Medicine. Memory and Sleep: How Sleep Cognition Can Change the Waking Mind for the Better. https://pmc.ncbi.nlm.nih.gov/articles/PMC7983127/

  6. National Library of Medicine. Electronic Device Use before Bedtime and Sleep Quality among University Students. https://pmc.ncbi.nlm.nih.gov/articles/PMC8466496/

  7. Sleep Foundation. Mastering Sleep Hygiene: Your Path to Quality Sleep. https://www.sleepfoundation.org/sleep-hygiene

  8. Watson NF, et al. (2015). Recommended Amount of Sleep for a Healthy Adult: A Joint Consensus Statement of the American Academy of Sleep Medicine and Sleep Research Society. Sleep, 38(6), 843–844.

  9. Hirshkowitz M, et al. (2015). National Sleep Foundation's Sleep Time Duration Recommendations: Methodology and Results Summary. Sleep Health, 1(1), 40–43.American Academy of Sleep Medicine (AASM). Healthy Sleep Resources and Adult Sleep Recommendations.

  10. Centers for Disease Control and Prevention (CDC). About Sleep. https://www.cdc.gov/sleep

  11. National Heart, Lung, and Blood Institute (NHLBI). Sleep Deprivation and Deficiency. https://www.nhlbi.nih.gov

  12. National Institute of Neurological Disorders and Stroke (NINDS). Brain Basics: Understanding Sleep. https://www.ninds.nih.gov

  13. National Library of Medicine. Memory and Sleep: How Sleep Cognition Can Change the Waking Mind for the Better. https://pmc.ncbi.nlm.nih.gov/articles/PMC7983127/

  14. National Library of Medicine. Electronic Device Use before Bedtime and Sleep Quality among University Students. https://pmc.ncbi.nlm.nih.gov/articles/PMC8466496/

  15. Sleep Foundation. Mastering Sleep Hygiene: Your Path to Quality Sleep. https://www.sleepfoundation.org/sleep-hygiene

  16. Watson NF, et al. (2015). Recommended Amount of Sleep for a Healthy Adult: A Joint Consensus Statement of the American Academy of Sleep Medicine and Sleep Research Society. Sleep, 38(6), 843–844.

  17. Hirshkowitz M, et al. (2015). National Sleep Foundation's Sleep Time Duration Recommendations: Methodology and Results Summary. Sleep Health, 1(1), 40–43.

Article written by:

Hira S.F.

"I enjoy researching and writing easy-to-understand articles on health, wellness, and lifestyle. My goal is to turn reliable information into practical advice that helps readers make informed decisions and improve their everyday lives."

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