Research on factors influencing sleep inertia has suggested strategies for reducing sleep inertia, including sleeping for an optimal duration and waking up from light sleep. Reducing sleep inertia helps people awaken refreshed in the morning. Studies have also suggested that the effect of sleep stages and circadian timing on sleep inertia was influenced by sleep loss (deprivation).
Studies on the effect of endogenous circadian cycles on sleep inertia indicated that sleep inertia is worse after nights when the core body temperature is lower than the day. Research on the relationship between sleep stages and sleep inertia has reported that performance decreased upon waking from SWS sleep compared to N1, N2, and REM sleep. reported that performance was worse after chronic restricted sleep when sleep opportunities for a 24-h day were 5.6 h compared to normal sleep when sleep opportunity for a 24-h day was 8 h. Sleep deprivation studies on the relationship between sleep loss and sleep inertia have indicated that sleep inertia worsens on partial sleep deprivation (2 h) nights compared to sufficient sleep (8 h) nights. These factors include prior sleep deprivation, the length of waking time prior to sleep, the sleep stage at awakening, circadian timing of awakening, the amount of non-rapid eye movement (NREM) slow-wave sleep (SWS), and the method of waking. Many factors increase the intensity and duration of sleep inertia. Sleep inertia appears after normal nocturnal sleep, and its duration rarely exceeds 30 min. Moreover, sleep loss (deprivation) increases sleep inertia, which is a transitional state of reduced arousal and impaired cognitive and behavioral performance immediately upon awakening. Sleep loss (deprivation) has led to increased daytime sleepiness and bad moods on awakening, with impairments of specific cognitive function and decreased immune, inflammatory and cardiovascular functions. The Japan Broadcasting Corporation (NHK) reported in 2020 that the mean sleep time of Japanese people was 7 h 12 min, down from 8 h 13 min in 1960. Today, the nocturnal sleep duration has become shorter for most people. The Creative Commons Public Domain Dedication waiver ( ) applies to the data made available in this article, unless otherwise stated in a credit line to the data. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. Whether you’re looking to buy Alarm Clocks online or get inspiration for your home, you’ll find just what you’re looking for on Houzz.Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. Shop from Alarm Clocks, like the Westclox 47550 Quartz Loud Bell Alarm Clock or the Equity® 33100 Electric Analog Alarm Clock with White Case & Lighted Dial, while discovering new home products and designs. With such a wide selection of Alarm Clocks for sale, from brands like BAI DESIGN INC., Natico, and La Crosse Technology, you’re sure to find something that you’ll love. Find where to buy Alarm Clocks and get inspired with our curated ideas for Alarm Clocks to find the perfect item for every room in your home. How’s that for a wake-up call? Get up and at ‘em with ease each morning with one of our fun, retro or radio styles here on Houzz. Thankfully there are plenty of alarm clocks for heavy sleepers, including styles like the sonic boom alarm clock which not only blasts you with an extremely loud buzzer, it shakes your bed, too.
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Once we do, we look like we’re re-enacting one of the first scenes from the movie Shaun of the Dead - we do the zombie shuffle all the way out the door. Instead we’re faced with a continuous battle of mind over matter when it comes to getting ourselves out of bed. For some of us, however, the noise of the radio or a vibrating design simply isn’t enough.
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