In order to understand the effects of caffeine on sleep, let’s do a quick overview of the human sleep cycle. A recent sleep hygiene study examined how consuming caffeine during the day can impact your quality of sleep at night. If you are sensitive to caffeine or have sleep difficulties use caffeine … Caffeine and sleep. Insomnia is a common problem and abstinence from caffeine is the most popular component in sleep hygiene advice. In this integrative review, we examine evidence illuminating the relationship between caffeine consumption and subsequent quality and quantity of nighttime rest. Reddit; Wechat; Abstract. Some people are more sensitive to caffeine’s effects on sleep quality than others. Journal of Clinical Sleep Medicine : JCSM : Official Publication of the American Academy of Sleep Medicine , … According to the Reddit Nootropics group “The combination of L-theanine and caffeine may improve attention more than caffeine alone.” [4] [4] Most companies find individual ingredients with studies, but have no evidence for the combinations that they make. Evening use of caffeine moderates the relationship between caffeine consumption and subjective sleep quality in students Kerpershoek M, Antypa N and Van den Berg J Journal of Sleep Research, 10.1111/jsr.12670, Vol. 5, (e12670), Online publication date: 1-Oct-2018. 27, No. Sleep is a vital process that keeps our bodies functioning at optimal levels. For tired people who are doing work that's relatively straightforward, that doesn't require lots of subtle or abstract thinking, coffee has been shown to help increase output and quality. Caffeine Effects on Sleep Taken 0, 3, or 6 Hours before Going to Bed. They found that caffeine consumed up to 6 hours before bedtime had a significant effect on sleep quality. Participants who drank caffeine 6 hours before bed (and later) spent a lot of time awake at night. " The general consensus on caffeine studies shows that it can enhance work output, but mainly in certain types of work. High doses of caffeine can make it hard to fall asleep and stay asleep. Aim. Caffeine and Sleep - Important Things to Know About Caffeine and Sleep. And in good and somewhat surprising news for coffee drinkers, a new study finds that having caffeine before bed does not affect sleep quality. Sleep in humans can be affected by caffeine. The aim of the present study is to review the effects of caffeine abstinence on the quality of sleep. There is an association between a daily intake of caffeine, reduced sleep quality, and increased daytime sleepiness 35,36.. 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