Get Daily Fitness Inspiration Right in your inbox. Customize Select the topics that interest you:. Weight Loss. Working Out. Book Swipe Shop. We're Hiring! Terms Privacy Policy. Patients with chronic fatigue syndrome have reduced absolute cortical blood flow.
Clinical Physiology and Functional Imaging, 26 2 , 83— A minute, but not a minute nighttime nap is associated with sleep inertia. Sleep, 39 3 , — Cappelletti, S. Caffeine: Cognitive and physical performance enhancer or psychoactive drug? Current Neuropharmacology, 13 1 , 71— McLellan, T. A review of caffeine's effects on cognitive, physical and occupational performance.
Neuroscience and Biobehavioral Reviews, 71, — O'Callaghan, F. Effects of caffeine on sleep quality and daytime functioning. Risk Management and Healthcare Policy, 11, — Chang, A. Human responses to bright light of different durations. The Journal of Physiology, 13 , — Fujii, H. Fatigue and sleep under large summer temperature differences. Environmental Research, , 17— The Manual's Editorial Staff.
Merck Manual Consumer Version. Jacobson, B. Changes in back pain, sleep quality, and perceived stress after introduction of new bedding systems. Journal of Chiropractic Medicine, 8 1 , 1—8. Lillehei, A. A systematic review of the effect of inhaled essential oils on sleep. Kline, C. The bidirectional relationship between exercise and sleep: Implications for exercise adherence and sleep improvement. American Journal of Lifestyle Medicine, 8 6 , — Lynch, K. Gastroesophageal reflux disease GERD.
Merck Manual Professional Version. Zandy, M. Tobacco smoke exposure and sleep: Estimating the association of urinary cotinine with sleep quality. Learn more about How Sleep Works. Updated By Eric Suni March 10, Oversleeping By Austin Meadows November 3, By Danielle Pacheco November 11, By Eric Suni November 4, By Eric Suni November 2, By Rob Newsom September 20, By Jay Summer September 2, By Danielle Pacheco August 26, By Jay Summer August 26, What Kind of Sleeper Are You?
By Danielle Pacheco January 8, You should wake up when you should wake up. This article is part of Quartz Ideas , our home for bold arguments and big thinkers. By providing your email, you agree to the Quartz Privacy Policy. Skip to navigation Skip to content. Discover Membership. Editions Quartz. Naps can leave people with sleep inertia, especially when they last more than minutes.
While sleep inertia usually only lasts for a few minutes to a half-hour, it can be detrimental to those who must perform immediately after waking from a napping period. Post-nap impairment and disorientation is more severe, and can last longer, in people who are sleep deprived or nap for longer periods. Decision-making performance may still be 20 percent below optimum performance as long as 30 minutes after waking.
Sleep inertia may affect cognitive performance for up to two hours. However, these only help to overcome the consequences of sleep inertia, not the cause of the problem. Caffeine and adrenaline stimulate the central nervous system, increasing wakefulness, and improving concentration and focus by boosting your heart rate and blood pressure. A regular alarm clock will go off at the preset time regardless of the sleep stage you are in, so if a regular alarm clock with a fixed time of awakening is the main reason for sleep inertia, the best option is to get rid of it.
There are several sleep stage alarm clocks that significantly simplify the life for their owners. These alarm clocks are aware of your sleep patterns and by waking you during optimal stages of sleep, can greatly fend off sleep inertia and improve how you feel first thing in the morning. Do you wake up feeling groggy?
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