Focus
✓Explore all 891 studies in Sleep →
The full evidence base behind this focus area, every study with its grade and DOI.13 blocks
ASleep · overview
Sleep: Why It Matters for Health
An orientation to how much sleep adults need and why sleep quality, timing, and regularity affect nearly every system of the body.
better sleepenergylongevity
ASleep · concept
CBT-I: What It Is and Why It Is First Line
Cognitive behavioural therapy for insomnia is the best-supported treatment for persistent insomnia, and it is something you get from a professional rather than something you assemble yourself.
Know that persistent insomnia has a well-evidenced treatmentKnow what CBT-I involves before seeking itAsk for it by name
ASleep · concept
Chronotype: Larks and Owls
Why people differ in their natural timing preference and how chronotype interacts with schedules.
better sleepenergyfocus
ASleep · concept
Exercise and Sleep
How regular physical activity supports better sleep, and how timing of exercise can matter.
better sleeprecoveryenergy
ASleep · concept
Light, Darkness, and Melatonin
How light exposure suppresses melatonin and shifts the clock, and why evening darkness supports sleep timing.
better sleepenergymood
ASleep · concept
Napping: Benefits and Trade-offs
How short naps can boost alertness while long or late naps may reduce night-time sleep drive.
energyfocusrecovery
ASleep · concept
Sleep Duration and Health Outcomes
Why both too little and too much habitual sleep track with higher risk across mortality, heart, and metabolic outcomes.
longevitybetter sleepenergy
ASleep · concept
Sleep Regularity and Consistency
Why keeping consistent sleep and wake times may matter for health beyond total hours slept.
better sleeplongevityenergy
ASleep · concept
Sleep and Heart Health
Why both short and long sleep are associated with higher cardiovascular risk.
longevitybetter sleep
ASleep · concept
Sleep and Metabolic Health
Why short or disrupted sleep is linked with higher risk of type 2 diabetes, obesity, and impaired glucose control.
longevitybetter sleepenergy
ASleep · concept
Sleep and Mood
How sleep and emotional well-being interact, and why poor sleep tracks with worse mood.
moodbetter sleepenergy
ASleep · concept
The Circadian Rhythm and Your Body Clock
How an internal ~24-hour clock, entrained mainly by light, governs the timing of sleepiness and alertness.
better sleepenergymood
ASleep · concept
What Sleep Loss Does to Daytime Function
How acute and chronic sleep loss impair alertness, reaction time, safety, and mood the next day.
energyfocusbetter sleep