sleep hygiene – Sleep experts say better rest comes from steady, realistic habits—anchoring wake and sleep times, building a calming wind-down, keeping bedrooms cool, watching food and alcohol, timing exercise, getting morning sunlight, and cutting evening screen light.
For many people, the hardest part of sleep isn’t falling asleep once—it’s making bedtime feel predictable again. Sleep science has long pointed to sleep hygiene—your habits and your environment—as the foundation for deeper. more restorative rest. Experts say the key isn’t a quick fix. It’s consistency: training your body to recognize cues for when it should wind down and when it should be alert.
Ahead, sleep specialists shared the habits they return to when patients are stuck in restless cycles. Their recommendations circle back to a few fundamentals: steady anchors for when the day begins and ends. transitions that tell the body to shift gears. a bedroom designed as a true sanctuary. and light management in the evening—especially screen light.
What is sleep hygiene?
Sleep hygiene refers to the set of habits and environmental conditions that support consistent, restorative sleep. It covers your sleep schedule and bedroom setup, along with daytime behavior like when you exercise, when you consume caffeine, and how much light you get.
Dr. Chris Winter. a neurologist. sleep specialist. and best-selling author at Charlottesville Neurology and Sleep Medicine. describes it as “the foundation your sleep is built on.” In practical terms. that means small choices that shape your internal clock—what cues make you feel alert. and what cues make you feel sleepy.
Why sleep hygiene matters
Modern sleep guidelines suggest that most adults need seven to nine hours of sleep per night. But the CDC has reported that approximately 37% of U.S. adults are not getting enough sleep. The gap is also not evenly distributed: men outpace women. and insufficient sleep is particularly prevalent among older adults aged 45 to 64.
Sleep researchers have also linked persistent lack of sleep to impaired mood and cognition, immune function issues, and higher risk of chronic conditions such as obesity, type 2 diabetes, and cardiovascular disease.
“Poor sleep hygiene is one of the most common and most fixable causes of bad sleep I see in my practice,” Winter says. People often assume they have insomnia or a sleep disorder, when the issue may be that their body has received inconsistent signals “for years.”
Winter also describes what long-term change feels like: as the brain learns what cues mean rest, bedtime can shift from dread to something people look forward to.
Eight evidence-based habits that can reinforce your sleep signals
1) Keep a consistent sleep-wake schedule
Dr. Eric Zhou. an associate professor of psychiatry and a faculty member in the Division of Sleep Medicine at Harvard Medical School. says the single biggest step is to get out of bed at the same time each morning.
“Ending your sleep at the same time is far more important than going to bed at the same time,” Zhou explains. If sleep ends at a consistent time each morning, it establishes a rhythm that shapes when you’ll feel sleepy the next night.
2) Create a wind-down window before bed
Dr. Jordan Weiner, an otolaryngologist, sleep apnea surgeon, and clinical assistant professor at the University of Arizona College of Medicine–Phoenix, points out that the brain doesn’t have a light switch that turns off when it’s time to sleep.
A wind-down routine helps signal that rest is coming. Weiner recommends avoiding highly stimulating activities in the hour or two before lights out, including exciting television programming, social media, games, or even reading the news or other material that may be anxiety-provoking.
He also suggests mindful meditation or deep-breathing exercises to slow the heart and respiratory rate. Weiner emphasizes that there’s no one-size-fits-all routine—“anything you choose to do during this time should be calming rather than exciting.”
3) Lower your bedroom temperature
Winter says environment matters as much as what you do before bed. He recommends keeping your bedroom between 65 and 68 degrees Fahrenheit. “Your core body temperature needs to drop by about two to three degrees to initiate sleep. and a cool room supports that process. ” Winter says. “When your environment is too warm, your body has to work against itself.”.
For people who want more precise control—especially those sharing a bed with someone who runs at a different temperature—Winter points to sleep tech like the Chilipad 2.0, which lets users “dial in your sleep surface temperature precisely.”
4) Watch what and when you eat close to bedtime
Weiner cautions that eating close to bedtime can be disruptive because foods have thermogenic properties, which can cause your body to get warmer after eating due to the energy required for digestion.
He also notes that protein drives increased body temperature the most, so protein-rich meals like dinner should be smaller or eaten earlier in the day.
Beyond digestion, Weiner says eating too close to bedtime can contribute to reflux, where stomach contents move into the esophagus and even the upper airway. That can lead to coughing and throat drainage at night—both of which can interfere with sleep.
5) Avoid alcohol in the evening
Zhou says alcohol is a central nervous system depressant and can slow brain activity. It may help some people feel drowsy quickly enough to fall asleep faster.
But he warns that alcohol isn’t a great sleep solution. As the body metabolizes alcohol, effects wear off and can trigger rebound insomnia.
Zhou describes rebound insomnia as alcohol changing the architecture of sleep and shaping how you feel the next day. He notes that alcohol suppresses rapid eye movement (REM) sleep. a stage “critical for brain development. ” and that insufficient REM can be associated with feeling tired and moody during the day.
Alcohol can also worsen obstructive sleep apnea by relaxing muscles of the throat, creating a greater potential for collapse.
Zhou’s practical guidance is to limit alcoholic beverages as much as you can—maximum two for men and one for women—and stop alcohol consumption at least four to six hours prior to bedtime.
6) Exercise—but don’t time it too close to lights out
Weiner says regular physical activity supports sleep, but timing matters. Exercise activates the sympathetic nervous system, increasing blood pressure and heart rate.
While research shows exercise supports healthy sleep by regulating body temperature, mood, metabolism, and circadian rhythm, Weiner cautions that exercising too close to bedtime can interfere with sleep by delaying sleep onset, shortening sleep duration, and lowering overall sleep quality.
He suggests ending exercise sessions at least four hours before hitting the hay.
7) Get morning sunlight
Zhou recommends morning sunlight as a circadian rhythm signal. He suggests sunlight exposure “as consistently as possible, right around the time you wake up for the day.”
This helps signal the body to stop producing melatonin so you begin to feel more alert in the morning.
The effect of sunlight on circadian rhythms has been well documented, and some studies have shown that even short exposures—10 to 30 minutes—can have measurable effects on sleep onset and overall sleep quality.
8) Manage evening screen time and bedroom light
Dr. Timothy Jones. a sleep medicine physician at Orlando Health. says that in 2026. many people are exposed to extra light in their sleeping environment that wasn’t present for most of human history. He explains that humans have a direct neural pathway from the eyes to a brain region that regulates circadian rhythm and wakefulness.
Jones points to devices as the most common culprit. “Smartphones steal your sleep,” he says, describing how the blue light they emit sends a strong signal to the brain that it is daytime and time to be awake.
In real life, that often looks like lying down exhausted, scrolling, and still being awake an hour later.
To protect sleep, Jones recommends a 30- to 60-minute tech-free buffer before bed. He also suggests minimizing extraneous bedroom light by covering charging devices on nightstands and using window shades that fully block external light sources.
The same neural pathway from the eyes to the brain that regulates circadian rhythm is why these steps matter.
The bottom line: treat sleep hygiene like a marathon
Sleep hygiene isn’t an overnight miracle or an all-or-nothing game. The best approach, experts say, is to start with one or two habits that feel most doable and build from there.
Small, steady changes—like swapping late-night social media for a book or skipping the nightcap—often lead to big improvements over time. Consistency, they say, is what turns better sleep from a hope into a habit.
sleep hygiene sleep tips circadian rhythm wind-down routine bedroom temperature alcohol and sleep REM sleep morning sunlight screen time U.S. adults sleep deprivation