How to Sleep Better: The 12 Evidence-Backed Habits, Ranked by How Much They Actually Help

The clip runs eleven seconds. A woman in a dim kitchen mouths the words “three, three, three” and promises that if you follow this rule, you will be asleep before your head warms the pillow. As of September 2026 that video, and hundreds like it, has been shared tens of millions of times, alongside a rotating cast of “Japanese tricks” and military breathing counts. Searches for how to sleep better have climbed with them.

Some of that advice is sound. Some of it is sound advice with the important parts sanded off. A fair amount is invention with a confident voice. What almost none of it tells you is which habits have been tested in randomized trials, which rest on observational data, and which are simply things sleep clinicians reasonably believe.

So this piece does something the viral versions never do: it ranks twelve habits by the strength of the evidence and the size of the effect, then says plainly where the science thins out.

What changed recently: why sleep advice is everywhere this month

Three things converged. In June 2022 the American Heart Association rewrote its checklist of cardiovascular health, Life’s Simple 7, into Life’s Essential 8, and the new item was sleep: seven to nine hours a night for adults, sitting alongside blood pressure, cholesterol and blood sugar. That reframing, sleep as a vital sign rather than a lifestyle nicety, has filtered slowly into primary care and now into everyday conversation.

The second is scale. CDC surveillance continues to find that roughly one in three US adults reports sleeping less than the recommended seven hours, a figure that has barely moved in a decade. When a third of the country is short on something, any promise of a fix travels fast.

The third is the internet’s habit of compressing evidence into a rule with a catchy number. Through the summer of 2026 the “3-3-3 rule for sleep” and several versions of a “Japanese trick” have circulated widely on short-video platforms. Some versions borrow real components of insomnia therapy; others are pure invention. None has been tested as a package in a trial.

Meanwhile, the guidance from the NHS, the Mayo Clinic and Harvard Health has been quietly consistent for years: regular timing, a bedroom built for sleep, caution with caffeine and alcohol, movement during the day. What has changed is not the science but the appetite for it. That makes this a good moment to lay the twelve habits side by side and be honest about which carry trial-grade evidence and which are sensible defaults resting on expert opinion. The order below is our editorial judgment, but every placement is explained.

How to sleep better: the 12 habits ranked at a glance

The ranking weighs three things. First, the quality of the evidence: randomized controlled trials, in which people are assigned by chance to a habit or a comparison, sit at the top; observational studies, which watch what people already do, sit in the middle; expert opinion sits at the bottom. Second, the size of the effect on the three outcomes that matter to a tired person: how long it takes to fall asleep, how often you wake, and how much sleep you get. Third, effort, because a habit nobody keeps helps nobody.

Rank	Habit	Evidence strength	What to expect
1	Same wake time, seven days a week	Strong (trials within insomnia therapy; circadian science)	Easier sleep onset, fewer wakings within one to two weeks
2	Outdoor light within an hour of waking	Moderate (trials plus laboratory data)	Sleepiness arrives earlier and more predictably
3	Bed only for sleep; get up if awake about 20 minutes	Strong (trials; core of CBT-I)	Faster sleep onset, bed stops feeling like a battleground
4	Time in bed matched to actual sleep	Strong (trials; core of CBT-I)	Deeper, more continuous sleep; brief daytime sleepiness first
5	Caffeine cut-off about eight hours before bed	Moderate (controlled studies)	Up to about an hour more sleep for late users
6	No alcohol as a sleep aid	Moderate (laboratory and observational)	Fewer 3 a.m. wakings, more dream sleep
7	Cool, dark, quiet bedroom	Moderate to expert opinion	Fewer brief arousals; modest
8	Regular exercise	Moderate (pooled trials)	Modest gains in sleep quality
9	Wind-down routine with a worry list	Moderate (small trials)	Less time lying awake thinking
10	Naps short and before mid-afternoon	Weak (observational)	Protects night-time sleep drive
11	Dim screens in the last hour	Weak and mixed	Small; content matters more than the light
12	Stop clock-watching	Expert opinion (CBT-I component)	Less night-time anxiety

Notice that the top four are about timing and conditioning, not gadgets. That is the single most useful thing to take from the table.

Habits 1 and 2: a fixed wake time and morning daylight

Your body runs on a circadian rhythm, an internal clock of roughly 24 hours that decides when you feel alert and when you feel sleepy. That clock does not set itself by bedtime. It sets itself by when you wake and, above all, by when light hits your eyes.

This is why the fixed wake time earns the top spot. Choose an hour you can hold on Saturdays as well as Tuesdays, and get up at it even after a poor night. Two things follow. Sleep drive, the pressure to sleep that builds steadily during the hours you are awake, accumulates on a predictable schedule, so bedtime sleepiness arrives on cue. And the clock stops drifting. A two-hour weekend lie-in pushes the clock later much as a flight west would, which is why Monday morning feels like jet lag; researchers literally call it social jet lag. Fixed wake times are baked into every trial of cognitive behavioral therapy for insomnia, so the evidence here is strong, if rarely tested alone.

Morning light is the second anchor. Specialized cells in the retina report brightness directly to the clock’s control center in the brain, and a bright signal soon after waking tells it, firmly, that the day has begun. Ten to thirty minutes outdoors does it; even an overcast sky delivers far more light than a bright office. Laboratory studies show the mechanism cleanly, and clinical trials of timed light for people whose clocks run late show earlier sleepiness at night. The evidence is moderate rather than airtight, but the cost is a walk to the corner and back.

If you can only change two things, change these two. Everything below works better on top of a stable clock.

Habits 3 and 4: the two insomnia-therapy moves most people skip

Cognitive behavioral therapy for insomnia, usually shortened to CBT-I, is a structured program that retrains the habits and thoughts keeping sleep away, and international guidelines name it the first-line treatment for chronic insomnia ahead of medicines. Two of its components can be practiced by anyone, and they are the habits people most often leave out because they feel counterintuitive.

The first is stimulus control, which simply means teaching your brain that bed equals sleep and nothing else. Go to bed only when genuinely sleepy, not merely tired. Keep working, scrolling, eating and worrying out of the bed. If you have been awake for what feels like twenty minutes, get up, sit somewhere dim and dull, and return only when sleepiness comes back. It is uncomfortable for a week. In trials it is one of the most reliable ways to shorten the time it takes to fall asleep.

The second is matching your time in bed to the sleep you are actually getting, called sleep restriction or sleep compression. Sleep efficiency is the percentage of time in bed spent asleep; healthy sleepers sit around 85 percent or higher. Someone who lies in bed for nine hours to collect six hours of broken sleep has an efficiency near 65 percent, and the lying-awake hours are precisely where insomnia is learned. Narrowing the window toward the sleep you truly get concentrates sleep, makes it deeper and, over two to three weeks, lets you extend the window again as efficiency rises.

One honest caveat. Deliberately shortening sleep brings daytime sleepiness at first, so people who drive for a living, operate machinery, or live with seizure disorders or bipolar disorder should do this only with a clinician’s guidance.

Habits 5 and 6: the caffeine cut-off and the alcohol trap

Caffeine works by blocking adenosine, the chemical that builds up during waking hours and produces the feeling of sleep pressure. That is why it is useful at 8 a.m. and why it is quietly destructive at 4 p.m. Its half-life, the time for the body to clear half of a dose, is around five hours in a typical adult and longer in some people, during pregnancy, and with certain medicines. A late-afternoon coffee is still partly in circulation at midnight.

The best-known controlled study on timing gave people a strong dose of caffeine either at bedtime, three hours before, or six hours before, on separate nights, and measured their sleep. Even the six-hour dose cut total sleep by roughly an hour, and, tellingly, the participants did not notice; their own reports of sleep quality barely changed. This is why the habit ranks fifth rather than lower: the effect is real, it is invisible from the inside, and the fix is a clock. Aim to finish caffeine about eight hours before bed, and remember that tea, cola, energy drinks, pre-workout powders and some pain relievers count.

Alcohol is the mirror image. It is sedating, so it shortens the time to fall asleep, which is why one in five adults with insomnia has used it as a sleep aid at some point. But as the body clears it during the night, the second half of sleep fragments: more awakenings, more vivid dreams, and a marked reduction in REM sleep, the rapid-eye-movement stage in which most dreaming and much memory processing happen. Alcohol also relaxes the throat muscles, worsening snoring and sleep apnea.

The evidence for both habits is moderate: strong in the laboratory, consistent in observational studies, and not something a randomized trial could ethically run for years.

Habits 7 and 8: a cool, dark room and regular movement

Falling asleep is partly a thermal event. Core body temperature drops by roughly a degree Celsius across the evening, and the drop itself is one of the signals that opens the door to sleep. A warm room blunts it. Most sleep organizations suggest a bedroom in the mid-60s Fahrenheit, about 18°C, adjusted for bedding and personal comfort. There is a pleasant paradox here: a warm bath or shower one to two hours before bed helps, because the heat pulls blood to the skin and the body then cools faster once you step out.

Darkness matters because light, even a little, tells the clock it is still day. Blackout curtains or a simple eye mask are the low-tech answer. Quiet matters for the same reason; every car door and dog bark risks a brief arousal you may not remember but that shallows your sleep. Earplugs or a steady, unvarying background sound reduce those interruptions. The evidence base for the bedroom trio is a mix of laboratory physiology and expert consensus rather than large trials, which is why it sits in the middle of the table despite being on every list you have ever read.

Exercise is better studied. Pooled analyses of randomized trials show that regular aerobic activity, roughly the 150 minutes a week the heart guidelines already ask for, produces modest but consistent improvements in sleep quality and time to fall asleep, with the largest gains in people who slept poorly to begin with. The old rule that evening workouts ruin sleep has not held up well; for most people, moderate exercise finished an hour or more before bed is fine, and only very intense late sessions push sleep back. If a morning walk is also your light exposure, you have quietly stacked habits two and eight.

Habits 9 and 10: a wind-down that offloads worry, and naps that don't backfire

Ask people what actually keeps them awake and the honest answer is rarely noise or light. It is their own thinking. A wind-down routine works less by relaxation magic than by giving the mind a predictable off-ramp: the same thirty to sixty minutes of dimmer light, a paper book, stretching, a warm drink without caffeine, in the same order, most nights.

The specific technique with the best data is the worry list, sometimes called constructive worry. Early in the evening, not in bed, write down what is on your mind and, for each item, the very next step you will take tomorrow. Small randomized studies find that people who do this fall asleep faster than those who write about their day, and the effect grows with how specific the list is. Relaxation methods such as slow breathing and progressive muscle relaxation have moderate evidence when delivered inside CBT-I; on their own they help some people and bore others. Rank them by whether they work for you, not by what a video promises.

Napping is a question of arithmetic. Every nap spends some of the sleep drive you are saving for the night. A twenty-minute nap before about 3 p.m. barely dents it and restores alertness; a ninety-minute nap at 5 p.m. can erase the sleepiness you needed at 11. The evidence here is observational and mixed, which is why this habit ranks tenth, and there are exceptions: shift workers, older adults with fragmented nights and people recovering from illness often do well with planned short naps.

If you nap and then cannot sleep, the nap is the first suspect. If you do not nap and still cannot sleep, look higher up the list.

Habits 11 and 12: screens and clock-watching, smaller than the headlines say

Here the evidence gets honest in a way most sleep tips are not. Melatonin is the hormone your brain releases in darkness to signal that night has arrived, and laboratory studies do show that the short-wavelength blue light from screens suppresses it. That finding launched a thousand orange-tinted glasses. What the trials in real bedrooms show is more modest: reading on a bright tablet versus a paper book delays sleep onset and the melatonin rise by minutes, not hours, in most people. The stronger effects of a phone at midnight come from what it does to the mind. A tense group chat, an unread work email or an autoplaying feed is arousing, and every ten minutes of scrolling is ten minutes of sleep not taken.

So the useful version of habit eleven is not a war on blue light. It is dimming the room and the screen in the last hour, and moving anything emotionally sticky, news, work, arguments, out of the bedroom. Night mode settings are harmless and may help a little. Charging the phone in another room helps more, because it also removes the temptation to check the time.

Which brings us to habit twelve. Clock-watching is a small habit with an outsized psychological cost. Seeing 2:47 a.m. triggers a quick calculation, four hours left, then frustration, then the stress hormones that make sleep less likely still. Insomnia therapists routinely tell patients to turn the clock away or remove it, and while nobody has randomized people to clocks versus no clocks, the reasoning is consistent with everything known about conditioned arousal. It ranks last only because the evidence is expert opinion. It costs nothing, and for the anxious sleeper it is often the first thing that helps.

What the evidence actually says about how to sleep better

Grading matters because “studies show” covers everything from a rigorous trial to a survey of forty undergraduates. Three tiers are enough for everyday use. A randomized controlled trial assigns people by chance to a treatment or a comparison, which is the only design that can separate cause from coincidence. Observational studies follow what people already do, and they are good at spotting patterns but poor at proving them. Expert opinion is what experienced clinicians recommend when neither exists.

By that standard, the strongest evidence belongs to the behavioral package. Meta-analyses of CBT-I trials find that it shortens the time to fall asleep by roughly twenty minutes and cuts time awake during the night by around thirty minutes, with gains that hold at follow-up a year later. Stimulus control and matching time in bed to actual sleep, habits three and four, are its working parts, and a fixed wake time is its scaffolding. This is why those three top the ranking.

A second tier, caffeine timing, alcohol, exercise, morning light, rests on controlled laboratory studies and pooled trials with consistent direction and modest size. You can trust the direction; be modest about the magnitude.

The third tier is what most articles call sleep hygiene: the cool room, the routine, the screens, the clock. Here the evidence is thinner, and one finding deserves emphasis. When sleep hygiene education alone is tested as a treatment for chronic insomnia, it performs poorly; it is often the control condition that CBT-I beats. That does not make it useless. It makes it a foundation, not a therapy. Someone who has been sleeping badly for months and has already tried the room and the routine should not conclude that they have failed. They have simply exhausted the weak tier and need the strong one.

Common myths: the 3-3-3 rule, the 'Japanese trick' and other viral sleep tips

The 3-3-3 rule exists in at least three versions online: no food, screens or work for three hours before bed; three deep breaths, three things you are grateful for, three muscle groups relaxed; or three minutes of a breathing count. None has been tested as a package. The first version echoes real evidence on late heavy meals and pre-bed arousal, though the three-hour figure is a round number, not a finding. The others are gentle relaxation exercises, harmless and occasionally helpful. What they are not is a treatment for insomnia, and presenting them that way sets people up to feel broken when the trick fails.

The “Japanese trick” is usually one of three things: a slow breathing pattern, pressing a point on the wrist or between the eyebrows, or a military-style routine of relaxing the face, shoulders and legs while visualizing a calm scene. The relaxation components share the moderate evidence of relaxation training in general. There is no reliable trial of the acupressure claims for insomnia, and nothing about any of it is specifically Japanese. Borrow the parts that calm you; ignore the origin story.

Everyone needs eight hours is a myth by precision. CDC guidance is seven or more hours for adults, and the healthy range runs from about seven to nine. Some people genuinely need less, though far fewer than believe they do.

Catching up at the weekend helps less than it feels like it does. Lie-ins shift the clock later, and observational work links large weekday-weekend differences to poorer metabolic health.

Lying in bed longer to get more sleep is the most damaging myth on the list, because it does the opposite of habit four and teaches the brain that bed is where you lie awake. And a nightcap, as covered above, buys a faster start at the price of a worse night.

Tired but can't sleep? Why your body won't let you sleep at night

The sensation has a name in sleep clinics: hyperarousal. Two systems govern sleep. Sleep drive, the adenosine pressure that builds through the day, pushes you toward it. The arousal system, run by the same stress circuitry that handles a near-miss in traffic, pulls you away. When people say they are exhausted but cannot sleep, the first system is working fine. The second has not been told the danger is over.

Several things keep it switched on. Stress hormones such as cortisol are supposed to be at their lowest around midnight and climb toward morning; chronic stress flattens that curve so the evening trough never quite arrives. Conditioning adds a layer: after enough bad nights, the bed itself, the ceiling, the sound of the heating clicking on, all become cues for alertness rather than sleep, which is exactly what habit three is designed to undo. And a late coffee or a phone full of unfinished business feeds the system directly.

Sometimes, though, the body is signaling something more specific. Restless legs syndrome produces a creeping, urge-to-move discomfort in the evenings that eases with walking. Obstructive sleep apnea, in which the airway repeatedly closes during sleep, causes loud snoring and gasping and leaves people exhausted despite seeming to sleep. An overactive thyroid, chronic pain, night-time reflux, the hot flashes of perimenopause, depression and anxiety, and a long list of common medicines, including some for asthma, blood pressure and mood, can all keep the arousal system lit.

The practical test is time and pattern. Wired-but-tired nights that follow a stressful week and respond to the top four habits within two or three weeks are usually conditioned arousal. Nights that come with physical symptoms, that have lasted months, or that leave you unsafe to drive are a reason to book an appointment, not to try a new trick.

Where sleep aids and prescription medicines fit

Every list of sleep tips eventually collides with the medicine cabinet, so it is worth being clear about what the guidelines say and what they leave to the individual clinician.

Over-the-counter sleep aids fall broadly into two groups: older antihistamine-based products that cause drowsiness as a side effect, and supplements, most commonly synthetic versions of the body’s own darkness hormone, melatonin. For the antihistamines, trials show small effects on sleep that fade within days, alongside next-day grogginess and, in older adults, a well-documented link to confusion and falls; major geriatric guidelines advise against them. For melatonin supplements, pooled trials find a modest reduction in time to fall asleep, measured in minutes, with better evidence for shifting a late-running body clock than for treating insomnia itself. In the United States they are regulated as dietary supplements, so content can vary between products. Whether either is appropriate for you, and for how long, is a conversation to have with a clinician or pharmacist who knows your other medicines.

Prescription sleep medicines are effective in the short term in randomized trials and carry their own trade-offs, which is why professional guidelines place CBT-I first for chronic insomnia and reserve medicines for shorter courses or for people who cannot access or do not respond to behavioral treatment. None of this means that someone already prescribed a sleep medicine should stop it after reading an article. Some of these medicines cause rebound insomnia or other withdrawal effects if stopped abruptly, and any change belongs with the prescriber.

The encouraging point is that the twelve habits are not an alternative to medical care. They are what medical care asks you to do first, and what makes any further step work better.

When to see a doctor

Most poor sleep improves with the habits above inside a few weeks. Some does not, and some poor sleep is a symptom of a condition that needs treating in its own right. Book an appointment if any of the following applies.

• Trouble falling or staying asleep at least three nights a week for three months or more, despite a genuine trial of the top four habits. That pattern meets the definition of chronic insomnia, and CBT-I, delivered by a trained clinician or through a structured digital program, is the guideline-recommended treatment.
• Loud, persistent snoring with pauses in breathing, gasping or choking noticed by a partner, or waking with a dry mouth and morning headaches. These are the classic signs of obstructive sleep apnea, which is diagnosed with a sleep study and is very treatable.
• Falling asleep without meaning to during the day, especially while driving, in meetings or mid-conversation.
• An uncomfortable urge to move your legs in the evening that improves when you walk.
• Acting out dreams, shouting or striking out during sleep, or episodes of being unable to move on waking.
• Poor sleep alongside low mood, loss of interest, persistent anxiety, or any thoughts of harming yourself; the last of these needs same-day help through a crisis line or emergency services.
• Chest pain, breathlessness or palpitations that wake you.
• Sleep problems that began after starting a new medicine, or in a child or teenager, where the causes and the approach differ.

Come to the appointment with a two-week sleep diary noting bedtime, estimated time to fall asleep, wakings and wake time, plus caffeine, alcohol and medicines. It shortens the consultation and often makes the diagnosis on the spot. Decisions about medicines, sleep studies or referral belong with the clinician who examines you.

How to get better sleep in the next 14 days: a realistic plan

Twelve habits at once is a recipe for keeping none. The evidence ranking suggests a sequence, and two weeks is long enough to feel it work.

Days one to three are for measurement, not change. Keep the diary described above. Most people are surprised twice: by how much later the weekend wake time really is, and by how much of the time in bed is spent awake. Calculate a rough sleep efficiency by dividing hours asleep by hours in bed.

From day four, fix the wake time and get outside within the hour. Choose a time you can honor on both weekend mornings. Move caffeine to before lunch and skip alcohol, or hold it to early evening on no more than a couple of nights. Turn the clock away. Expect the first few nights to feel no better; the clock is still moving.

From day seven, apply stimulus control. Bed only when sleepy, up after roughly twenty minutes awake, back only when sleepy again. If your efficiency was under 80 percent, gently narrow the time in bed toward the hours you actually sleep, keeping the wake time fixed and moving bedtime later rather than the reverse. Daytime sleepiness for a week is the expected price and the sign it is working. Add the worry list in the early evening and a cooler, darker room; these are cheap and compound.

By day fourteen, recheck the diary. Rising efficiency and a shorter time to fall asleep mean you can widen the sleep window by fifteen minutes and keep going. No change at all, or any of the red flags in the section above, means the next step is an appointment rather than another fortnight of effort. How to get better sleep is, in the end, less a list than an order of operations, and the order is what the trials support.

Frequently asked questions

What is the 3-3-3 rule for sleep?

The 3-3-3 rule is a viral shorthand with several versions, most commonly no food, screens or work for three hours before bed, or a brief routine of three breaths, three grateful thoughts and three relaxed muscle groups. It has never been tested as a package in a trial. Parts of it echo real evidence on pre-bed arousal and late heavy meals, but it is a relaxation routine, not a treatment for insomnia.

What is the Japanese trick to sleep?

It usually refers to a slow breathing pattern, pressing a point on the wrist or forehead, or a military-style routine of relaxing the face, shoulders and legs while picturing a calm scene. The relaxation elements have moderate evidence when used inside insomnia therapy. There is no reliable trial supporting the acupressure claims, and nothing about the method is specifically Japanese, so borrow what calms you and skip the origin story.

Why is my body not letting me sleep at night?

Most often because the arousal system, the same stress circuitry that handles danger, has not switched off even though sleep pressure is high. Stress, a bed that has become a cue for wakefulness, late caffeine and an emotionally busy phone all feed it. Physical causes such as restless legs, sleep apnea, thyroid problems, pain, perimenopause and some medicines can do the same, which is why months of this warrant a clinician’s assessment.

Why am I so tired but can't sleep?

Being tired and being sleepy are different states. Tiredness is depleted energy; sleepiness is the readiness to fall asleep, and it can be blocked by stress hormones, conditioned alertness or caffeine still in circulation. The fastest fixes are a fixed wake time, getting up if you lie awake, and cutting caffeine after lunch. If the pattern persists or comes with snoring, leg discomfort or low mood, see a doctor.

How long should it take to fall asleep?

About ten to twenty minutes is typical for a healthy adult. Falling asleep in under five minutes most nights often signals sleep deprivation rather than good sleep, while regularly taking more than thirty minutes is one of the markers used to define insomnia. If you routinely lie awake much longer, the most evidence-backed response is to get out of bed and return only when sleepy.

Which sleep tips work fastest?

The quickest measurable change usually comes from moving caffeine to before lunch and skipping alcohol in the evening, often within a few nights. A fixed wake time and morning light take one to two weeks to reset the body clock. Stimulus control and narrowing time in bed feel worse for about a week before delivering the largest gains, which is why patience with those two pays best.

Do weekend lie-ins help you catch up on sleep?

Only partly, and at a cost. Extra weekend sleep repays some short-term debt, but sleeping in by two hours shifts the body clock later much like a westward flight, producing the Monday grogginess researchers call social jet lag. Observational studies also link large weekday-weekend differences to poorer metabolic health. Keeping the wake time within an hour of the weekday one protects the clock better.

What temperature should a bedroom be for sleep?

Most sleep organizations suggest the mid-60s Fahrenheit, around 18°C, adjusted for bedding and personal comfort. The reason is physiological: core body temperature falls by about a degree Celsius in the evening, and that drop is one of the signals that starts sleep. A warm bath or shower an hour or two before bed helps by pulling heat to the skin so the body cools faster afterward.

Is six hours of sleep enough?

For most adults, no. CDC guidance is seven or more hours a night, and the American Heart Association counts seven to nine hours as the healthy range for its Life’s Essential 8. A small minority genuinely function well on less, but far fewer than believe they do, and laboratory studies show people chronically short on sleep underestimate how impaired they are.

How to get better sleep if you work night shifts?

Anchor the clock as far as the schedule allows: keep the same sleep window on consecutive shift days, wear dark glasses on the drive home to limit morning light, and make the bedroom as dark and quiet as a real night. A short planned nap before a shift protects alertness. Persistent difficulty despite this can meet the definition of shift work disorder, which a sleep clinician can assess and manage.

References

• About Sleep: Centers for Disease Control and Prevention
• How to fall asleep faster and sleep better: NHS Every Mind Matters
• Healthy Sleep: MedlinePlus

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.