General guidance for adults. Research findings and practical examples are distinguished below.
Why It Matters
Sleep supports attention and daily functioning. Spending enough time in bed creates an opportunity to sleep, but time in bed and actual sleep are not the same.
What the Evidence Shows
The AASM/SRS consensus for ages 18–60 recommends 7 or more hours per night regularly. It is a consensus informed by multiple health outcomes, not an instruction to force a precise number every night. CDC lists 7–9 hours for ages 61–64 and 7–8 hours for ages 65 and older. Individual need and recovery from sleep loss vary. [1] [2]
What You Can Do
- Choose tomorrow’s necessary wake time, then protect a realistic sleep opportunity before it. If you routinely cut sleep short, move one late-evening task earlier rather than only setting a more ambitious alarm.
- For one week, keep a simple paper diary of bedtime, estimated sleep, wake time and daytime sleepiness. A week is a useful planning example, not a diagnostic test. Bring the record to an appointment if needed. [2]
- Choose one obstacle to change: late work, a noisy room or a schedule that leaves too little time. Review whether you feel more alert; do not chase a wearable’s score at the expense of sleep.
What to Consider
Do not drive when sleepy. Persistent excessive sleepiness, loud snoring with breathing pauses, or insomnia affecting daily life warrants assessment. Spending longer awake in bed is not the same as treating chronic insomnia; you can discuss Cognitive Behavioral Therapy for Insomnia (CBT-I), a structured treatment that helps change sleep-related habits and thoughts. [3] [4]
Primary Sources
- Watson NF et al. J Clin Sleep Med (2015). Recommended Amount of Sleep for a Healthy Adult: A Joint Consensus Statement of the AASM and SRS.
Consensus statement
Review scope / funding and COI
Recommendation and age scope checked; not an intervention effect size.
- CDC (2024). About Sleep.
Public guidance
Review scope / funding and COI
Age-specific sleep ranges and diary guidance.
- NHLBI (2025). Sleep Apnea: Symptoms.
Public clinical information
Review scope / funding and COI
Symptoms prompting assessment; not a self-diagnosis tool.
- Edinger JD et al. J Clin Sleep Med (2021). Behavioral and psychological treatments for chronic insomnia disorder in adults. DOI: 10.5664/jcsm.8986.
Clinical practice guideline
Review scope / funding and COI
AASM recommendation checked: multicomponent CBT-I, not sleep hygiene alone.