If you often wake up tired, you’re far from alone. Public health agencies recommend that most adults get at least seven hours of sleep a night, and surveys suggest that a large share of people regularly get less. Sleep isn’t a luxury: it supports memory, mood, the immune system and heart health.
The good news is that small changes to your daily routine often make a noticeable difference. This guide explains how much sleep you need, walks through eight habits worth trying, clears up some common myths and tells you when it’s time to get professional help. You don’t need to change everything at once. Pick one or two habits and build from there.
Key takeaways
- Aim for seven or more hours, going to bed and waking up at consistent times.
- Get daylight in the morning and keep the evening dim and calm.
- Stop caffeine early in the day and go easy on alcohol near bedtime.
- Keep the bedroom cool, dark and quiet.
- If sleep problems last for weeks, talk to a healthcare professional.
Why sleep matters more than you think
During sleep your body is far from idle. Your brain sorts and stores the memories of the day, your muscles and tissues repair themselves, and hormones that control appetite, growth and stress are rebalanced. Regularly getting too little sleep is linked in research to a higher risk of high blood pressure, type 2 diabetes, weight gain, depression and accidents, and it makes it harder to concentrate and regulate your emotions.
Most of these links come from observational studies, so they show association rather than proof of cause. Still, the pattern is consistent enough that every major health organization treats regular, sufficient sleep as a pillar of health, alongside nutrition and physical activity.
How much sleep do you need?
Needs vary from person to person, but the commonly cited recommendations from U.S. health and sleep organizations look like this:
| Age group | Recommended sleep per 24 hours |
|---|---|
| School-age children (6 to 12) | 9 to 12 hours |
| Teenagers (13 to 18) | 8 to 10 hours |
| Adults (18 to 60) | 7 or more hours |
| Adults (61 to 64) | 7 to 9 hours |
| Adults (65 and older) | 7 to 8 hours |
A simple test: if you fall asleep within about 20 to 30 minutes, wake up feeling mostly refreshed and stay alert through the day without leaning heavily on caffeine, you are probably getting enough.
1. Keep a regular schedule
Your body runs on an internal clock. Going to bed and getting up at roughly the same time every day, weekends included, helps that clock stay steady. Try to keep your wake-up time within about an hour of normal, even after a late night. A consistent wake-up time is often the single most powerful anchor, because it sets the timing for when you’ll feel sleepy that evening.
2. Get daylight early in the day
Bright light in the morning helps anchor your body clock, which can make it easier to feel sleepy at night. A short walk outside after you wake up is enough, even on a cloudy day, since outdoor light is far brighter than indoor lighting. In the evening, do the opposite: dim the lights and avoid harsh overhead lighting in the last hour before bed.
3. Be smart about caffeine, alcohol and late meals
Caffeine can stay in your system for many hours, so many people sleep better when they stop having it by early afternoon. Remember that it hides in tea, cola, energy drinks, chocolate and some medicines, not just coffee. Alcohol may make you feel drowsy at first, but it tends to fragment sleep later in the night and can leave you less rested the next day.
Big, heavy or spicy meals close to bedtime can cause discomfort and heartburn, while going to bed very hungry can also keep you awake. If you need something, a light snack such as a banana, yogurt or a small bowl of oatmeal is usually fine. Drinking lots of fluids right before bed may mean extra trips to the bathroom, so front-load your water earlier in the day.
4. Build a wind-down routine
Give yourself 30 to 60 minutes of calm before bed. Dim the lights, read a few pages of a book, stretch gently, take a warm shower or listen to quiet music. A short relaxation practice can also help; our five-minute stress reset works well as a bedtime routine. Stimulating content such as work email, the news and intense shows make it harder for many people to switch off, so try to put them away earlier.
What about screens and blue light?
It’s often said that the blue light from phones keeps you awake. The research is more mixed than the headlines suggest: bright light at night can delay your body clock, but what you’re doing on the screen often matters just as much. Scrolling stressful news or answering messages keeps your mind busy, while a calm audiobook does not. A practical approach is to dim your screens, use night mode if you like it, and stop stimulating activities about an hour before bed.
5. Make the bedroom work for sleep
- Cool: a room temperature around 65°F (18°C) is commonly suggested.
- Dark: blackout curtains or a comfortable eye mask help.
- Quiet: earplugs or steady background white noise can mask disruptions.
- Comfortable: a supportive mattress and pillows that suit how you sleep.
- Reserved for sleep: try not to work or scroll in bed, so your brain links the bed with rest.
6. Move your body during the day
Regular physical activity is linked to falling asleep faster and sleeping more deeply. You don’t need a gym: a brisk daily walk counts (see our guide to how much walking you really need). Most people do fine exercising in the evening, but if a very intense workout late at night leaves you wired, move it earlier in the day.
7. Don’t lie awake battling the clock
If you can’t fall asleep after roughly 20 minutes, get up, go to another room and do something calm in dim light, such as reading or gentle stretching. Return to bed when you feel sleepy. Watching the clock tends to raise stress and make sleep harder, so turn the clock face away from you. Everyone has the occasional bad night, and one poor night rarely does lasting harm.
8. Be careful with sleep aids
Over-the-counter sleep aids and supplements such as melatonin are widely used, but they aren’t right for everyone and they don’t fix the underlying causes of poor sleep. Check with a pharmacist or doctor first, especially if you take other medications, are pregnant or breastfeeding, or are older. Some antihistamine-based sleep aids can cause next-day grogginess and are generally discouraged for older adults.
What about naps?
A short nap can improve alertness and mood. Keep it to about 20 to 30 minutes and finish before mid-afternoon, so it doesn’t eat into your night-time sleep. If you are struggling to sleep at night, cutting back on long or late naps is a good first experiment.
Common sleep myths
Myth: You can fully catch up on lost sleep at the weekend.
Fact: A long lie-in can help you feel better for a day or two, but it doesn’t fully undo a week of short sleep, and big swings in your schedule can make Monday morning harder. Steady habits work better.
Myth: A nightcap helps you sleep.
Fact: Alcohol can make you fall asleep faster, but it disrupts the second half of the night and can worsen snoring and sleep apnea.
Myth: Everyone needs exactly eight hours.
Fact: Eight is just a handy average. Most adults do well on seven to nine hours, and what matters is waking up rested and functioning well during the day.
Myth: Snoring is harmless.
Fact: Occasional snoring is common. But loud, frequent snoring with gasping, pauses in breathing or heavy daytime sleepiness can signal sleep apnea, which deserves a medical check.
Should you track your sleep?
Wearable trackers and sleep apps can be motivating and can reveal patterns such as irregular bedtimes. But their estimates of sleep stages are not precise, and obsessing over the numbers can itself cause worry and make sleep worse. If you use one, focus on the trends in your bedtime, wake-up time and total hours, and ignore small nightly differences.
Shift work and jet lag: a few quick tips
If you work nights, try to keep your sleep schedule as regular as you can on days off, use blackout curtains and wear sunglasses on the way home to limit morning light. For jet lag, adjust to local time as soon as you arrive, get daylight at the right time and avoid long naps. Both situations are really about shifting your body clock, which is why light timing matters so much.
When to talk to a professional
- You have trouble sleeping at least three nights a week for three months or more. This may be chronic insomnia, which often responds well to a structured therapy called CBT-I.
- You snore loudly with gasping or pauses in breathing, which can be a sign of sleep apnea.
- You feel very sleepy during the day, especially while driving.
- You have an uncomfortable urge to move your legs at night, or you act out vivid dreams.
Frequently asked questions
How long should it take to fall asleep?
Most healthy adults fall asleep within about 10 to 30 minutes. Falling asleep in under five minutes every night can actually be a sign you are not getting enough sleep, while regularly taking much longer than 30 minutes is worth addressing with the habits above.
Is it OK to sleep with the TV on?
It’s better to avoid it if you can. Changing light and sound can fragment your sleep even if you don’t fully wake. If you rely on background noise, a steady fan or white-noise sound is usually a better choice than a TV.
Is melatonin safe to take every night?
Melatonin is generally considered safe for short-term use in many adults, but products vary in strength and quality, and it isn’t suitable for everyone. Ask a doctor or pharmacist before using it regularly, especially for children, during pregnancy or if you take other medicines.
Why do I wake up at 3 a.m. and can’t get back to sleep?
Brief awakenings are normal. Stress, alcohol, a warm room, noise, an overfull bladder and sleep apnea are common causes. Try to avoid clock-watching, get up and do something calm if you’re awake for more than about 20 minutes, and see a professional if it happens often.
How much sleep do older adults need?
Older adults need roughly the same amount, about seven to eight hours, although sleep often becomes lighter and more broken with age. Persistent trouble sleeping is not simply a normal part of aging and is worth discussing with a healthcare provider.
Start with one or two habits that feel realistic, such as a steady wake-up time and a calmer last hour of the evening, and build from there. Consistency matters more than perfection.
Sources and further reading
Try our free health tools
Put the numbers from this guide to work with a quick, private calculator.
More wellness guides
This guide is for general information only and is not medical advice. Talk to a qualified healthcare professional about your own situation before making changes to your health routine.