You've filled in your sleep diary for a week. Some nights were good, others weren't. Now you're staring at a page of bedtimes, wake-ups, and morning ratings, wondering what any of it means.
Here's where to start: don't try to fix everything. Look for the pattern that keeps showing up, choose one small change, and see whether the next week looks any different. (The sleep diary tool explains how to fill it in, and the sleep guide covers why sleep matters.)
Start with five things: when you turned out the lights, how long falling asleep seemed to take, how often you woke during the night, when you got up, and how you felt the next morning. Compare them across the week. You're looking for something that happens repeatedly, not one unusually bad night.
Reading one week: an invented example
Picture a made-up week, not a real person. Lights-out runs from 9:45 p.m. on Monday to 12:30 a.m. on Saturday. Get-up time slides from 6:30 to 8:45 over the weekend. Falling asleep takes 10 to 15 minutes most nights and about an hour on two of them. There are one or two wake-ups a night, and sleep comes back quickly. Morning ratings sag after the late nights. In this example, the biggest difference between good and bad mornings seems to be the shifting schedule. That's a sensible place to begin.
Your own week may point elsewhere. If your bedtimes or wake times are irregular, try a more consistent schedule. If you have trouble falling asleep, experiment with a relaxing wind-down; if you still cannot sleep, get out of bed briefly and return when you feel sleepy. If you wake often during the night, check light, noise, temperature and possible disruptions; if problems persist, seek clinical advice.
What's normal, and what a diary can't tell you
Some people think adults need less sleep with age, but MedlinePlus says there is no evidence for that. Older adults do often get less sleep, though — in MedlinePlus's words, they "spend less time in the deep, restful stages of sleep." So one lighter night or a brief wake-up isn't a finding. In our view, a line that looks the same night after night is worth acting on.
A sleep diary can reveal patterns, but it cannot diagnose a sleep disorder. Researchers are still testing and refining the standard diary, so treat your entries as useful clues rather than results.
Your first change
If your schedule is the main problem, start with a more consistent wake-up time. Public-health guidance is to go to bed and wake at the same time every day, weekends included. Then add a wind-down before lights-out. In our view, you could try about twenty minutes — a practical suggestion, not a prescribed duration. MedlinePlus suggests a bath, reading or calm music, and the bedroom cool, dark and quiet, with TVs, computers and phones out of it. It also says to avoid caffeine, especially in the afternoon and evening.
Tie the routine to something you already do. When the alarm goes off in the morning, you're up. When the bedside lamp goes on in the evening, the phone goes to charge in another room.
Bad nights will still happen. When 20 minutes or so pass without sleep, follow the public-health advice: "get up and do something relaxing" — keep the light dim and read something calm until you feel ready to return. After a week or two of the new routine, fill in the diary again and compare the same five lines. That shows whether the change helped or whether something else is in the way.
When to talk to a clinician
Don't wait for another diary week if a partner notices breathing that starts and stops, or frequent loud snoring, during your sleep. Those are listed symptoms of sleep apnea. Talk to your healthcare provider, because you may need a sleep study to help diagnose the condition.
The same goes for poor sleep that continues despite steady habits. MedlinePlus puts it plainly: "See a health care provider if you have continued trouble sleeping." It can mean a sleep disorder such as insomnia or sleep apnea. For chronic insomnia, one treatment is worth asking your clinician about:
ACP recommends that all adult patients receive cognitive behavioral therapy for insomnia (CBT-I) as the initial treatment for chronic insomnia disorder.
Any decision about sleep medication belongs to you and your clinician.
This guide doesn't interpret naps, medications or shift-work schedules. If those shape your week, bring the diary to your appointment as it is.