You slept eight hours. The alarm goes, and you feel as if you have been dug up. So you hit snooze, and feel guilty about it, because snoozing is supposed to be the worst possible start to a day. You do it anyway, every morning, like someone defusing a bomb with their eyes shut.
It has been tested. Thirty-one people who snooze every morning slept in a laboratory, woken once by a single alarm and once with 30 minutes of snoozing. After snoozing they did no worse on thinking tests as they got up, and on some they did better. It cost them about six minutes of sleep, and it spared them being dragged straight out of deep sleep. Their stress hormone and their mood on waking were no different.
That does not make the snooze button a sleep cure. It does show that the first minutes of the morning have their own rules, and that waking up rested is a separate problem from sleeping well. To fix your sleep, take both, in that order: the morning first, then the evening, the room and the things that stand between you and better sleep.
The grogginess has a name
The heavy, slow, stupid feeling of the first minutes awake is called sleep inertia. Thinking and movement are measurably worse straight after waking, and the impairment fades as you stay awake. In most cases, in the morning, it lasts 15 to 30 minutes. It can last hours. It is the reason not to answer an important email from bed.
Three things make it worse. Being woken out of deep sleep, rather than lighter sleep. Being short of sleep beforehand. And waking at a bad time for your body clock. So a groggy first quarter of an hour after eight hours is not proof of a bad night. Groggy until lunch is a different message.
When it is a different message, look at the ordinary suspects first. Bright light late into the evening. Dinner late. The phone in bed. A lie-in every weekend that drags the clock later, so that the alarm on a working morning goes off in your body's night. None of these is dramatic. Together they are enough.
The same rule runs naps. Why You're Always Tired: The Rest You're Missing has the nap test: after a short night, a ten-minute afternoon nap lifted alertness, energy and thinking straight away. Five minutes did little. Thirty left people groggy first, most likely because the longer nap reached deeper sleep.
The strangest way to wake is to wake and be unable to move. Sleep paralysis is being conscious while the body is still held still by dreaming sleep, sometimes with hallucinations, usually for no more than a few minutes. Pooled across 35 papers and 36,533 people, 7.6% of the general population, 28.3% of students and 31.9% of psychiatric patients had had at least one episode. It is physically harmless, and short sleep and stress make it likelier. Nicolai Abildgaard's painting Nightmare, from 1800, is thought to show it as a visit from a demon.
How much you need
The Sleep-Immune Connection: What One Sleepless Night Does to Your Defences has the usual advice, seven to nine hours for adults, and the honest picture of the rare true short sleeper: someone who has been that way all their adult life, wakes after five or six hours feeling rested without an alarm, and needs no coffee to get going and no lie-in on a day off.
Age moves the target. When 65 papers covering 3,577 healthy people aged 5 to 102 were pooled, adults slept less as they got older, with less deep sleep and less REM, took longer to drop off and woke more in the night. After 60, only one measure kept falling: the share of time in bed actually spent asleep. Lighter, more broken sleep at 70 is the normal shape of sleep at 70, not a fault to fix.
There is also a way to tell real sleepiness from feeling a bit flat. If you can fall asleep almost anywhere within minutes during the day, it is not a talent. It is a bill. In the sleep clinic's daytime nap test, falling asleep in under eight minutes on average counts as objective evidence of excessive sleepiness.
The alarm
The word is a call to battle. "Alarm" comes from the Italian all'arme!, "to arms!". Before alarm clocks were cheap and reliable, waking people was a trade: knocker-ups were paid a few pence a week to rap on doors, or on upper windows with long sticks, and one in East London used a pea-shooter. The job hung on in parts of industrial England into the early 1970s. The snooze button arrived in 1956, on General Electric-Telechron's "Snooz-Alarm", and it gave nine minutes, because the gears could not be lined up to give exactly ten. Every morning, you obey a gear tooth from the fifties.
The snoozers in the opening came from a survey of 1,732 people. Snoozing was common, most of all among younger people and natural night owls, and the snoozers were more often drowsy in the morning and slept less. So the snooze button is as much a symptom as a habit. If you need it every day, the alarm is going off too early for your body, or you are going to bed too late for the alarm.
The sound matters a little. When 50 people described the alarms they woke to, those who rated theirs as melodic reported less grogginess. It is a small, self-reported finding. A tune costs nothing to try. The fire-drill klaxon was never a good idea.
Light may matter more. People who found early waking hard used an alarm clock that brightened the room gradually, like an artificial dawn, for two weeks at a time at home. Their complaints of grogginess fell. Their body clocks did not shift. The dawn eased the waking itself, which is all it needs to do on a dark winter morning. The does both jobs at once: a slow dawn, and natural sounds instead of a klaxon.
And there is an alarm inside you. The Invisible War Inside Your Body (And How to Win It) has the fifteen volunteers who were told when they would be woken. An hour before that time, with their eyes still shut, the hormone that calls for cortisol began to climb. Woken early by surprise, they showed no such rise. Their bodies had read the schedule. Yours can too, if you stop rewriting it. Keep the time fixed, and you may start waking just before the alarm.
The wake-up time
So the anchor is the wake-up time, not the bedtime. Pick it, and keep it seven days a week. Yes, at the weekend too.
The weekend lie-in feels like a reward and works like a short-haul flight. Why You're Still Exhausted Despite Doing Everything Right has what it repays: adults kept short of sleep all week and allowed to sleep as long as they liked at the weekend made up about an hour in total, and their body clocks shifted later. It also has why regular hours may matter more than long ones: among 60,977 adults who wore a motion sensor for a week, the most regular sleepers were 20 to 48% less likely to die over the following years than the least regular. That is a link, not proof, and it points the same way as everything else here.
Then work backwards. Your wake-up time, minus the sleep you need, is your bedtime. Forcing an early bedtime and hoping the morning takes care of itself is the wrong way round.
Morning
Light is the body clock's strongest signal, and morning light sets it earliest. Reset Your Body Clock, linked below, has the plain rule: get outside early, even under cloud, without sunglasses and not through a window. A clear day gives 10,000 lux or more even out of direct sun, an overcast day about 1,000, an office only 320 to 500. Your desk lamp is not the sun, however hard it tries. It also has how fast it works: after a summer weekend camping with nothing but natural light, people's body clocks moved earlier by about 69% of what a full week of camping had done.
Night owls get the most from this. More light early and less light late pulls a late clock earlier. It will not turn an owl into a lark, but it can close the gap between your clock and your alarm.
The owl was born, not made lazy. When the genes of 697,828 people were searched, 351 regions turned up linked with being a morning person, and the 5% carrying the most "morning" variants slept 25 minutes earlier than the 5% carrying the fewest. Being a morning person also went with better mental health, by a method built to test cause, and not with weight or type 2 diabetes. Twenty-five minutes is a nudge, not a sentence.
A walk outside does three jobs at once: light, movement and cool air. Cold water on the face does a smaller one, and fast.
Evening
The evening is the morning in reverse: dimmer, slower, quieter.
Light. 7 Ways to Make Every Day Work Better — Starting With What Your Body Is Doing has why brightness matters more than the source: in 23 volunteers, ordinary dim room light in the evening did half as much to delay the body clock as light ninety times brighter. Warm lamps low down, not the big light overhead.
Screens. How to Boost Energy Levels Naturally: Little-Known Remedies That Actually Work has the people who read on a lit screen before bed: they took longer to fall asleep, made less melatonin and were less alert the next morning than when they read a printed book. And what is on the screen counts as much as the light. Work email, a row, a thriller: none of them is a lullaby.
Warmth, then cool. 7 Ways has the warm bath or shower across 17 reports: it shortened the time people took to fall asleep, and ten minutes was enough. The warmth brings blood to the skin, and the core cools faster afterwards.
Food. Reset Your Body Clock has why earlier meals suit the clock. A heavy dinner late keeps the gut working when the rest of you is trying to stop.
Exercise. The usual warning is that an evening workout wrecks sleep. 7 Ways has the test of it: across 23 tests it did not, and people got slightly more deep sleep afterwards. The exception was hard exercise that finished within an hour of bed. The evening run is cleared. The sprint finish at bedtime is not.
The bedroom
The sleep industry sells mattresses, gadgets and sprays. The room needs four things, and none of them is expensive. The mattress showroom will not mention that.
Cool. How to Boost Energy Levels Naturally has it: in real beds, heat means more waking and less deep sleep, while cold does not disturb sleep the same way, as long as the bedding is warm enough. Leave a window or the door ajar for air. And the house plant on the windowsill will not rescue the air, which the same article explains.
Warm feet. It sounds like a contradiction and is not. Reset Your Body Clock has the six young men who slept in a cool room with and without bed socks: with the socks they fell asleep faster and slept 32 minutes longer. The feet are where the body dumps heat.
Dark. Blackout curtains, or a contoured that keeps the light out without pressing on the eyes, which also packs for the first night away.
Quiet. Earplugs such as , or steady background sound if the street is loud. Be honest about the second, though. When 38 papers on continuous white noise and sleep were reviewed, the findings ran from better sleep to worse, and the quality of evidence that it helps was very low, "which contradicts its widespread use". It may mask a sudden noise. It is not a sleep treatment.
The bed itself. If yours is past it, the evidence is short. Across 24 controlled tests, a medium-firm mattress, ideally one you can adjust yourself, came out best for comfort, sleep quality and the line of the spine.
Company. Young couples slept in a laboratory together and apart. Together, they had about 10% more REM sleep, the dreaming kind, and it was less broken up and more in step with each other's. They also moved their limbs more. The kicking came with the company.
Away from home. The bad first night in a hotel has a cause. When people slept in a laboratory for the first time, one half of the brain slept more lightly than the other, as a night watch over the unfamiliar room, and the bigger the imbalance, the longer they took to fall asleep. It is a first-night problem. Put nothing important in the morning after the first night somewhere new.
Chronic Insomnia, linked below, puts the limit well: set the room up once and stop tinkering. Past that point, a better bedroom adds very little.
What steals it
Caffeine. It works like duct tape over the check-engine light. The warning goes away. The fault does not. How to Boost Energy Levels Naturally has the bill: a strong coffee taken six hours before bed still cut people's sleep by more than an hour, and they were unaware of it. It also has the other half: the morning cup mostly undoes the tiredness and low mood that a night without caffeine has built. Water is the drink.
Alcohol. The Stress-Sleep Vicious Cycle: How to Break It has the nightcap: it gets you to sleep sooner, then breaks up the second half of the night. It sends you off, then wakes you for the bill.
Dread. When Sunday Night Feels Like Preparing for War: Emergency Workplace Survival Tactics has what a dreaded morning does to the night before it: when 37 people's sleep was recorded before a working day they were dreading, they got less deep sleep and rated their night worse.
Testosterone, honestly. You may read that one anxious evening wrecks a man's testosterone for the week. The measured picture is narrower. When 18 papers covering 252 men were pooled, short spells of reduced sleep made no clear difference to testosterone. A full night or more without sleep lowered it. Sleep matters for hormones. One bad evening is not a week of damage.
Remedies and gadgets
Before buying anything, see Natural Remedies for Insomnia: Match the Remedy to the Reason. It sorts the bottles by the reason you are awake, and it has why the cheapest magnesium tablets are the forms absorbed least.
The tracker on your wrist deserves the same suspicion. Why You're Still Exhausted has the seven consumer sleep trackers that, against a full sleep-lab recording, were good at telling sleep from wake and inconsistent at sleep stages, and the sleep clinics' name for people kept awake by their sleep scores. The Stress-Sleep Vicious Cycle has the comfort: your nights are probably better than they feel. Your wrist is not a sleep laboratory.
When it is something else
If you snore loudly, if someone has heard you stop breathing, or if the daytime sleepiness is the falling-asleep-in-meetings kind, the problem may be your breathing, not your habits. Ways to Stop Snoring Naturally—Which One Will Work for You? has what helps. Breathing that stops in the night is worth getting checked.
Waking in the small hours is not always a fault, either. Going through old documents, Roger Ekirch found more than 500 references to sleeping in two parts, a "first sleep" and a "second sleep", with a waking spell between them called "the watch", used to pray, to reflect and to think about dreams. He blames electric light for its disappearance. The picture is disputed: when sleep was recorded in three societies without industry in 2015, all three slept in one block at night, and Ekirch questioned the finding. Either way, a quiet half hour awake in the night is old. Lying there furious about it is the modern part.
If the trouble is lying awake for hours, night after night, bedroom tweaks will not reach it. Chronic Insomnia has the approach that does.
Rested
You will know it is working by small things. You wake a few minutes before the alarm. The grogginess lasts minutes, not the morning. You feel sleepy near the bedtime you chose, not hours later. The afternoon dip is a dip, not a collapse. The snooze button stops being a daily appointment. It can go back to being a nine-minute accident of engineering.
Every night you choose whether to work with your body clock or against it. The cheapest place to start is the morning.
This week, get up at the same time every day, weekends included.
Does your body clock run late? Reset Your Body Clock: Sleep Hacks, Tested — what sets the body clock and why teenagers run late, why morning light beats sunglasses, the bed socks that added half an hour of sleep, the meals that moved a clock by nearly six hours, amber glasses against red bulbs, and why a melatonin bottle is a gamble.
Lying awake for hours? Chronic Insomnia: Why Trying Harder Keeps You Awake — why trying harder keeps you awake, how less time in bed brings more sleep, giving the bed one job, and the maths that runs in your head in the small hours.
Know someone who hits snooze five times and feels guilty every time? Send them this. The guilt is optional.
Disclaimer: This article is general information. For advice about your own health, talk to a qualified health professional, especially if you snore loudly or stop breathing in your sleep, fall asleep in the day without meaning to, or have lain awake most nights for weeks.
Affiliate Disclosure: This article contains affiliate links. As an Amazon Associate, All For Life earns from qualifying purchases, at no extra cost to you. We only link to products we would recommend without the commission.
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