Danielle Pacheco Staff Writer
Danielle Pacheco
Staff Writer
Danielle is originally from Vancouver, BC, where she has spent many hours staring at her ceiling trying to fall asleep. Danielle studied the science of sleep with a degree in psychology at the University of British Columbia
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Heather Wright Pathologist
Heather Wright
Pathologist
Dr. Wright, M.D., is an Anatomic and Clinical Pathologist with a focus on hematopathology. She has a decade of experience in the study of disease.
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Up-to-Date
Table of Contents
Table of Contents
- How Does Napping Affect Sleep?
- Tips for Taking a Successful Nap
A brief nap Trusted Source National Center for Biotechnology InformationThe National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information.View Source can be refreshing and restorative, especially if you are sleep deprived, but longer naps late in the day can negatively impact your sleep quality and duration. A primary key to taking a successful nap comes down to timing. For most people, the ideal nap lasts 10 to 20 minutes Trusted Source National Library of Medicine, Biotech InformationThe National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information.View Source . Studies have also shown the best time to take a nap is in the early to mid-afternoon Trusted Source National Center for Biotechnology InformationThe National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information.View Source , when most people experience a natural decline in energy and alertness.
How Does Napping Affect Sleep?
Homeostatic sleep pressure, also known as your sleep drive, is a reason why you feel energized after waking up and gradually become more tired as the day progresses. Aside from considering your natural circadian rhythm and sleep drive, timing your naps correctly also requires an understanding of sleep architecture and different components of your sleep cycle.
The sleep cycle Trusted Source National Institute of Neurological Disorders and Stroke (NINDS)NINDS aims to seek fundamental knowledge about the brain and nervous system and to use that knowledge to reduce the burden of neurological disease.View Source of a healthy adult is divided into four distinct stages. The first two stages consist of light, non-rapid eye movement (NREM) sleep, during which your heart rate, breathing rate, body temperature, and brain activity will all gradually decrease. Since these are light NREM stages, you can be aroused from sleep somewhat easily.
The third stage of the cycle is composed of deep NREM sleep or slow-wave sleep. Your brain activity levels, heart and breathing rates, and body temperature will all reach their lowest points of the sleep cycle. Waking people up during this stage is fairly difficult compared to the first two NREM stages. Arousal from slow-wave sleep is often accompanied by feelings of grogginess and confusion.
The final stage, rapid eye movement (REM) sleep, is characterized by a spike in brain activity and erratic eye movements. Your heartbeat and breathing rate will increase toward their normal waking levels, and dreams are more likely to occur during this stage. During your first sleep cycle of a given night, REM sleep typically begins about 90 minutes after you nod off. Initial sleep cycles contain more slow-wave sleep, whereas cycles in the latter part of the night include more REM sleep.
If you nap in the morning, the sleep consists primarily of light NREM (and possibly REM) sleep. In contrast, napping later in the evening, as your sleep drive increases, will comprise more deep sleep. This, in turn, may disrupt your ability to fall asleep at night. Therefore, napping late in the day is discouraged.
Tips for Taking a Successful Nap
Based on findings from various studies, around 10 minutes is considered the best nap duration. This length of time allows you to catch a quick rest without entering slow-wave sleep and feeling excessively groggy after waking.
One particular study evaluated subjects after they took five-, 10-, 20-, and 30-minute naps. Subjects who slept for 10 minutes reported the most improvements. They did not feel groggy or fatigued upon waking, and their overall cognitive performance after waking was strong. Moreover, they felt benefits from their nap for up to 155 minutes after waking. Those who slept for 20 to 30 minutes noted the same positive benefits from napping as those described above, but only after a 30 to 35 minute period of impaired alertness and performance. The five-minute nap did not produce many benefits for sleepers compared to those in the control group, who did not nap at all.
The time of day is also important for napping. Most sleep experts recommend napping no later than 2 pm. As discussed above, napping prior to the mid-afternoon results in a combination of light and REM sleep, whereas napping after 2 pm results in more slow-wave sleep. This may affect your ability to fall asleep at a reasonable time later that night, potentially disrupting your nocturnal sleep cycle.
Other tips for napping include:
- If you can’t squeeze in a nap after lunch, exposure to bright light can provide a similar energy boost to help you finish your day.
- Consuming a moderate amount of caffeine (such as a small cup of coffee) or splashing water on your face can alleviate feelings of grogginess Trusted Source Centers for Disease Control and Prevention (CDC)As the nation’s health protection agency, CDC saves lives and protects people from health threats.View Source after waking from a nap.
- Consider wearing an eye mask and earplugs
- Some people find that taking a caffeine pill prior to napping is effective. The caffeine requires about 30 minutes to take effect, so you can wake up from your nap and feel more alert shortly thereafter. That said, you should avoid caffeine for up to six hours before bedtime ; otherwise, you are more likely to experience sleep problems that night.
Written By
Danielle Pacheco,Staff Writer
Danielle is originally from Vancouver, BC, where she has spent many hours staring at her ceiling trying to fall asleep. Danielle studied the science of sleep with a degree in psychology at the University of British Columbia
Medically Reviewed by
Heather Wright,PathologistMD
Dr. Wright, M.D., is an Anatomic and Clinical Pathologist with a focus on hematopathology. She has a decade of experience in the study of disease.
References
7 Sources
Mantua, J., & Spencer, R. M. C. (2017). Exploring the nap paradox: are mid-day sleep bouts a friend or foe? Sleep Medicine, 37, 88–97., Retrieved from
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5598771/Brooks, A., & Lack, L. (2006). A Brief Afternoon Nap Following Nocturnal Sleep Restriction: Which Nap Duration is Most Recuperative? Sleep, 29(6), 831–840., Retrieved from
https://pubmed.ncbi.nlm.nih.gov/16796222/Slama, H., Deliens, G., Schmitz, R., Peigneux, P., & Leproult, R. (2015). Afternoon Nap and Bright Light Exposure Improve Cognitive Flexibility Post Lunch. PLOS One, 10(5)., Retrieved from
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4446306/Cline, J. (2016, September 27). Secrets of Napping. Psychology Today., Retrieved September 21, 2020, from
https://www.psychologytoday.com/us/blog/sleepless-in-america/201609/secrets-nappingNational Institute of Neurological Disorders and Stroke. (2019, August 13). Brain basics: Understanding sleep., Retrieved September 21, 2020, from
https://www.ninds.nih.gov/health-information/public-education/brain-basics/brain-basics-understanding-sleepThe National Institute for Occupational Safety and Health. (2020, April 1). Napping, an Important Fatigue Countermeasure., Retrieved September 21, 2020, from
https://www.cdc.gov/niosh/emres/longhourstraining/napping.htmlBreus, M. J. (2013, December 16). New Details on Caffeine’s Sleep-Disrupting Effects. Psychology Today., Retrieved September 21, 2020, from
https://www.psychologytoday.com/us/blog/sleep-newzzz/201312/new-details-caffeine-s-sleep-disrupting-effects
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Sure, let's break this down into the concepts covered in the article:
Concepts Covered:
-
Napping Effects on Sleep:
- Napping benefits and drawbacks, impact on sleep quality and duration.
- Ideal nap duration (10 to 20 minutes).
- Timing of naps, especially in the early to mid-afternoon for optimal results.
-
Sleep Cycle:
- Four stages of the sleep cycle: light non-REM sleep, deep non-REM sleep (slow-wave sleep), REM sleep.
- Differences between these stages in terms of brain activity, heart rate, and ease of waking up.
- Morning naps primarily consist of light NREM or REM sleep, while afternoon naps include more slow-wave sleep, potentially affecting nighttime sleep.
-
Tips for Successful Napping:
- Optimal nap duration of around 10 minutes.
- Impact of varying nap durations (5, 10, 20, 30 minutes) on cognitive performance.
- Ideal time for napping (no later than 2 pm).
- Countermeasures to grogginess after napping, such as exposure to bright light, caffeine, water splashing, using eye masks, and earplugs.
-
Circadian Rhythm and Sleep Drive:
- Understanding the influence of sleep drive on energy levels throughout the day.
- How circadian rhythms affect the quality and type of sleep during naps taken at different times of the day.
-
Sleep Health and Wellness:
- The importance of sleep for overall health and well-being.
- Strategies to optimize napping for better daytime alertness without affecting nighttime sleep quality.
These concepts collectively encompass the dynamics of napping, its effects on the sleep cycle, and the nuances of timing and duration for maximizing its benefits without disrupting nocturnal sleep. They also touch on the broader context of sleep health and its impact on daily functioning and well-being.