How much sleep is enough?
The CDC recommends at least seven hours for adults aged 18–60, seven to nine hours at 61–64, and seven to eight hours from age 65. Children and teenagers need more. These ranges are a starting point: repeated waking or feeling unrefreshed also matters.
Time in bed is not the same as time asleep. If you allow seven hours between switching off the light and an alarm, a long time falling asleep may leave you short.
Sources: CDC — About sleep
Notice what gets in the way
Late caffeine, alcohol near bedtime, changing sleep times, noise, and evening screens can interfere with sleep. Caring responsibilities or shift work may make a regular schedule difficult. Choose the change you can control instead of blaming yourself for the rest.
For example, a parent may not be able to prevent nighttime interruptions, but could share an early-morning task with another adult. Someone with a long commute might prepare clothes and breakfast earlier to protect the time available for rest.
Sources: CDC — About sleep
Build a small evening routine
- Choose a realistic bedtime and wake-up time that you can keep reasonably consistent.
- Prepare the room so it feels quiet, comfortable, and cool.
- Set aside a screen-free wind-down period and avoid late caffeine.
- Keep a brief note of sleep times, naps, and how you feel during the day.
Try one change for several nights before adding another. A simple notebook is enough; you do not need a subscription or a device score to begin a conversation about sleep.
Sources: NHLBI — Healthy sleep habits
When to speak with a professional
Arrange medical advice if sleep problems persist, affect work or daily life, or continue despite enough opportunity to rest. Loud frequent snoring, witnessed pauses in breathing, or waking while gasping can be signs of sleep apnea. A clinician can assess these symptoms; this article cannot identify the cause.
Tell the clinician what you and anyone sharing your room have noticed. Bring your sleep notes and a list of medicines rather than stopping a prescribed medicine yourself.
Sources: NHLBI — Sleep apnea symptoms
Common questions
Can a sleep tracker diagnose a sleep disorder?
No. A consumer tracker may help you notice patterns, but it cannot replace a clinical assessment or a sleep study when one is needed.
What if my schedule makes a perfect routine impossible?
Focus on one practical improvement and protect sleep opportunities where possible. Tell a healthcare professional if tiredness is affecting your safety or daily functioning.
Sources & further reading
Public sources consulted for this update. Guidance can differ by country and personal circumstances.
HealthBook provides general health information for educational purposes and is not a substitute for professional medical advice, diagnosis, or treatment.