๐ŸŒ™ Quiz

Sleep myth or fact? Ten bedtime beliefs, checked

Weekend lie-ins, ten-minute naps, a nightcap, waking at 3 a.m.: ten things people believe about sleep, each held up against what sleep studies found.

By the Better Lifestyle Journey editorsยทUpdated
10 questions about 3 min Every answer sourced

Ten statements about everyday sleep. Call each one myth or fact, then see what the research says.

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Where the answers come from

Each answer rests on one source. The general rules come from public-health bodies: the US National Heart, Lung, and Blood Institute and the NHS, plus the 2015 consensus statement on how much sleep adults need. The rest are research papers: reviews that pool many studies, on alcohol, evening exercise and light, and single experiments on weekend lie-ins, nap length, e-readers and remembering night waking.

What it cannot tell you

Several of these findings come from small studies of healthy young adults, between 12 and 39 people, often in a sleep lab. They show what tends to happen, not what will happen to you, and they say little about older adults or anyone with a sleep disorder. If poor sleep goes on for weeks, that is worth raising with a doctor. Your individual answers stay in your browser; with your consent, the site only counts which result comes up.

Sources

  1. Recommended Amount of Sleep for a Healthy Adult: A Joint Consensus Statement of the American Academy of Sleep Medicine and Sleep Research Society. Sleep, 2015
  2. Ad libitum Weekend Recovery Sleep Fails to Prevent Metabolic Dysregulation during a Repeating Pattern of Insufficient Sleep and Weekend Recovery Sleep. Current Biology, 2019
  3. A Brief Afternoon Nap Following Nocturnal Sleep Restriction: Which Nap Duration is Most Recuperative?. Sleep, 2006
  4. Healthy Sleep Habits. National Heart, Lung, and Blood Institute, 2022
  5. Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness. Proceedings of the National Academy of Sciences, 2015
  6. Alcohol and Sleep I: Effects on Normal Sleep. Alcoholism: Clinical and Experimental Research, 2013
  7. Minimum duration of actigraphy-defined nocturnal awakenings necessary for morning recall. Sleep Medicine, 2013
  8. How to fall asleep faster and sleep better. NHS Every Mind Matters
  9. Effects of light on human circadian rhythms, sleep and mood. Somnologie, 2019
  10. Effects of Evening Exercise on Sleep in Healthy Participants: A Systematic Review and Meta-Analysis. Sports Medicine, 2019

Read the research behind it