Sleep quality profoundly impacts our health, memory, and overall wellbeing....
Psychology157 views·Updated Jun 20, 2026·2 pagesUnderstanding Sleep: Influences and Psychology
Tyra-Angel@xt_ang_studyx
1
of 2
How Drugs Affect Sleep Quality
Ever wondered why you toss and turn after that late-night coffee? Stimulant drugs make it difficult to fall asleep by increasing alertness and interfering with your body's natural sleep signals. Caffeine, found in coffee, tea, and energy drinks, blocks adenosine receptors in your brain—the very receptors that would normally signal tiredness.
The effects of caffeine can linger longer than you might expect. After drinking coffee, it takes over five hours for caffeine levels in your bloodstream to drop by half! This is why having caffeine late in the day can seriously disrupt your sleep cycle and potentially lead to insomnia.
Stronger stimulants have even more pronounced effects. Amphetamines (like "Speed") powerfully stimulate the central nervous system, promoting wakefulness and sometimes causing delusions. Though used medically for certain conditions, recreational use can severely disrupt normal sleep patterns.
Sleep Fact: Insomnia isn't just about struggling to fall asleep. It also includes difficulty staying asleep or waking up too early and being unable to return to sleep—all of which can be triggered by stimulants.
2
of 2
Medication, Alcohol and Light Exposure
Many prescription medications can unintentionally sabotage your sleep. Blood pressure medications and asthma treatments may cause insomnia, while antihistamines often lead to daytime drowsiness. Antidepressants typically suppress REM sleep and increase the time it takes to enter this important dream state, though these effects often diminish over time.
Fancy a nightcap before bed? Think again! While alcohol initially acts as a depressant that might help you fall asleep faster, it soon becomes a stimulant that disrupts your sleep cycle. Alcohol alters the proportions of REM and non-REM sleep, leading to more frequent night-time wakings and poorer sleep quality overall.
That late-night scrolling habit might be wrecking your sleep too. Artificial light from screens and energy-efficient bulbs contains blue wavelengths that suppress melatonin—the hormone that tells your body it's time to sleep. Research by Chang et al. (2015) found that using tablets or e-readers before bed resulted in less melatonin production, longer time to fall asleep, reduced REM sleep, and decreased morning alertness.
Try this: Create a "screen curfew" at least an hour before bedtime to allow your brain to naturally produce melatonin. Your morning self will thank you!
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How Drugs Affect Sleep Quality
Ever wondered why you toss and turn after that late-night coffee? Stimulant drugs make it difficult to fall asleep by increasing alertness and interfering with your body's natural sleep signals. Caffeine, found in coffee, tea, and energy drinks, blocks adenosine receptors in your brain—the very receptors that would normally signal tiredness.
The effects of caffeine can linger longer than you might expect. After drinking coffee, it takes over five hours for caffeine levels in your bloodstream to drop by half! This is why having caffeine late in the day can seriously disrupt your sleep cycle and potentially lead to insomnia.
Stronger stimulants have even more pronounced effects. Amphetamines (like "Speed") powerfully stimulate the central nervous system, promoting wakefulness and sometimes causing delusions. Though used medically for certain conditions, recreational use can severely disrupt normal sleep patterns.
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Medication, Alcohol and Light Exposure
Many prescription medications can unintentionally sabotage your sleep. Blood pressure medications and asthma treatments may cause insomnia, while antihistamines often lead to daytime drowsiness. Antidepressants typically suppress REM sleep and increase the time it takes to enter this important dream state, though these effects often diminish over time.
Fancy a nightcap before bed? Think again! While alcohol initially acts as a depressant that might help you fall asleep faster, it soon becomes a stimulant that disrupts your sleep cycle. Alcohol alters the proportions of REM and non-REM sleep, leading to more frequent night-time wakings and poorer sleep quality overall.
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