How Are You Supposed To Sleep?

Most adults need seven to nine hours of sleep each night, and the way you’re “supposed” to sleep is the way that gets you there consistently. That means going to bed and waking at roughly the same times daily, sleeping in a dark and cool room, and giving yourself enough wind-down time to actually fall asleep. There is no single perfect position or magic routine — but there are well-established habits that make good sleep far more likely.

If you’re asking this question, you may be lying awake right now. You may have tried things that didn’t work. This article explains what normal sleep actually looks like, why it goes wrong, and what the evidence says about fixing it.

How Much Sleep Do You Actually Need?

The National Sleep Foundation and most major sleep organizations converge on a similar range for healthy adults: seven to nine hours per night. Some people genuinely function well on slightly less. Very few do well on less than six.

The “I only need five hours” claim is common and usually wrong. Research consistently shows that people who chronically sleep less than seven hours tend to underperform on attention and reaction-time tests even when they feel fine. The feeling of being adapted to too little sleep is often just impaired self-awareness.

Sleep need also changes with age. Teenagers need more — typically eight to ten hours. Adults over 65 often need slightly less, around seven to eight hours, though the quality of that sleep tends to decline. Waking more often at night is normal with age and isn’t automatically a disorder.

What matters more than hitting an exact number is consistency. A steady seven hours beats a chaotic pattern of five hours on weekdays and ten on weekends. That weekend catch-up sleep doesn’t fully repay the debt — it helps, but the underlying rhythm stays disrupted.

What Happens in Your Body When You Sleep?

Sleep isn’t one uniform state. It’s a cycle of distinct stages that repeat roughly every 90 minutes, and each stage does different work.

Non-REM sleep comes first and deepens in stages. The deepest stage, sometimes called slow-wave sleep, is when the body repairs tissue, consolidates some types of memory, and releases growth hormone. This is the sleep that makes you feel physically restored.

REM sleep — rapid eye movement sleep — is when most vivid dreaming happens. It plays a role in emotional processing and memory consolidation. REM periods get longer toward morning, which is one reason cutting sleep short by an hour or two can cost you a disproportionate amount of REM.

Waking briefly between cycles is completely normal. Most people wake several times a night and don’t remember it. The problem isn’t the waking — it’s whether you can get back to sleep.

Why Can’t I Fall Asleep or Stay Asleep?

Short-term insomnia is usually traceable to something specific: stress, a schedule change, travel, illness, a new medication, or a room that’s too warm or too bright. When the trigger passes, sleep usually returns.

Chronic insomnia is different. It lasts for months and often becomes self-sustaining. The original trigger may be long gone, but the brain has learned to associate the bed with frustration and alertness. This is called conditioned arousal, and it’s one of the most common reasons people can’t sleep even when they’re exhausted.

Several other conditions can look like insomnia but aren’t:

• Sleep apnea — breathing repeatedly stops or shallow during sleep, fragmenting it without the person realizing
• Restless legs syndrome — an urge to move the legs, often worse at night
• Circadian rhythm disorders — the body clock is out of sync with the sleep schedule
• Anxiety and depression — both strongly linked to sleep disruption in either direction

If you snore heavily, wake gasping, or feel unrefreshed no matter how long you sleep, that pattern deserves a medical evaluation rather than another sleep app. Sleep apnea in particular is underdiagnosed and has real cardiovascular consequences when untreated.

What Is Sleep Hygiene and Does It Work?

Sleep hygiene is the set of everyday habits that support sleep. It’s a real concept with real evidence behind it — but it’s often oversold as a cure. For mild sleep problems, these habits often help. For chronic insomnia, they’re usually necessary but not sufficient on their own.

The core habits with the strongest support:

• Keep a consistent sleep and wake time, including weekends
• Keep the bedroom cool, dark, and quiet
• Get bright light in the morning and dim light in the evening
• Avoid caffeine in the afternoon and evening — it has a long half-life
• Limit alcohol close to bedtime, since it fragments sleep in the second half of the night
• Get regular daytime movement, though not right before bed for some people
• Keep the bed for sleep and sex, not for scrolling or working

One non-obvious point: lying in bed awake for a long time is counterproductive. If you’re not asleep after roughly 20 minutes, getting up and doing something quiet in dim light until you feel sleepy again often works better than staying put. This is a core part of the most effective insomnia treatment.

Which Sleep Position Is Best?

There’s no single best position for everyone. But there are meaningful differences depending on your health.

Side sleeping is the most common and generally well tolerated. It may help people with acid reflux, since gravity keeps stomach contents down. Sleeping on the left side specifically is often recommended for reflux, though the evidence for left versus right is not strong.

Back sleeping keeps the spine neutral and is often comfortable for people with back pain. It tends to worsen snoring and mild sleep apnea, because gravity pulls the tongue and soft tissue backward.

Stomach sleeping is the least recommended. It forces the neck to rotate and can strain the lower back. If you sleep this way and wake with neck or back pain, position is a reasonable suspect.

Pregnancy is a special case. Later in pregnancy, sleeping on the side — particularly the left — is generally recommended over back sleeping. If you wake on your back, don’t panic; just roll to your side.

Does Melatonin or Other Sleep Aid Help?

Melatonin is a hormone your body already makes to signal that night has arrived. As a supplement, it’s most useful for shifting timing — jet lag, shift work, or a delayed body clock — rather than for knocking you out at bedtime. The evidence for melatonin as a general sleep aid is modest at best.

Doses sold in stores vary widely, and in the US, melatonin is not held to the same purity standards as prescription drugs. Some products have been found to contain far more or less melatonin than the label states.

Prescription sleep medications can help in the short term. Most are intended for short-term use, and several carry risks of dependence, next-day grogginess, and — in older adults — falls and confusion. They are not a long-term solution for most people.

For chronic insomnia, the treatment with the strongest evidence is not a pill. It’s cognitive behavioral therapy for insomnia, or CBT-I. It works on the thoughts and behaviors that keep insomnia going, and it typically outperforms medication over the long run. It’s available through trained therapists and through several digital programs.

If you’re considering any sleep aid — prescription, over-the-counter, or supplement — talk with a clinician, especially if you take other medications or have a health condition.

When Should You See a Doctor About Sleep?

Occasional bad nights are normal and don’t require medical attention. Certain patterns do.

Talk to a clinician if you:

• Have trouble sleeping three or more nights a week for more than three months
• Feel sleepy during the day in ways that affect work, driving, or safety
• Snore heavily, gasp, or stop breathing during sleep
• Have restless or uncomfortable legs at night
• Notice your mood or anxiety worsening alongside poor sleep
• Have tried the basic habits for several weeks without improvement

Sleep problems and mental health are tightly linked, and both directions matter. Poor sleep can worsen anxiety and depression, and anxiety and depression can wreck sleep. If you’re struggling with your mood as well as your sleep, that’s a reason to seek support, not a reason to wait.