While exact global figures vary, recent U.S. research (early 2025) suggests about 38% of Americans can't sleep in silence, relying on sounds, with younger generations like Gen Z (nearly 50%) most dependent on background noise, indicating a significant portion of the population sleeps with noise rather than in true silence. This contrasts with older generations, like Baby Boomers, who are more likely to prefer quiet, though a majority still find silence challenging due to external noise or internal habits.
A new survey of 1-thousand U.S. adults finds that 38% say they can't sleep in silence. When they hit the sack, they count on white noise or other sounds to help them drift off to dreamland. But Gen Z has the hardest time snoozing in a completely quiet room, with 49% of them relying on sounds to get to sleep.
10 hours before bed: No more caffeine. 3 hours before bed: No more food or alcohol. 2 hours before bed: No more work. 1 hour before bed: No more screen time (shut off all phones, TVs and computers).
More than 30% of adults who participated in a recent survey said they typically use white noise or others sounds to help fall asleep. Gen Z adults made up the highest percentage of those polled, with 50% of them saying they rely on background noise before bedtime.
So the full answer is yes, people can sleep in total silence. If you want to do that, try starting with background noise and slowly lessening it. It may take awhile, but it absolutely can be done.
The koala is famous for sleeping around 20-22 hours a day, which is about 90% of the day, due to their low-energy diet of eucalyptus leaves that requires extensive digestion. Other extremely sleepy animals include the sloth (up to 20 hours) and the brown bat (around 20 hours), with some snakes like the ball python also sleeping up to 23 hours daily.
Tuning out environmental noises with the soothing sound of white noise from a fan can significantly improve sleep quality. While our ears hear white noise as a grainy static, it contains all of the frequencies found in the spectrum of sounds in equal parts. White noise varies in intensity, which a fan can regulate.
The 80/20 Rule means that you stick to your healthy, consistent sleep schedule 80% of the time. You then can make exceptions to your schedule 20% of the time. The 80/20 Rule allows you to “live life” and enjoy those special moments with your family.
3 dB rule: A 3 dB gain means twice (x2) the power. A 3 dB loss means half the power. For example, a system with 40 watts of input power and a 6 dB insertion loss will only have 10 watts of output power. dB: Decibel, a logarithm (equal to 10 times) ratio of the difference between two values.
Apologies to those who swear by their white noise machine, myself included, but research suggests that a silent environment is more conducive to good sleep as nighttime noise has the potential to cause a spike in adrenaline and cortisol levels as well as an elevated heart rate and blood pressure.
On average, Japanese sleep about 7 hours and 20 minutes a night, - the least among 33 OECD member countries. And the number of insomniacs is growing. But even as more people suffer from insomnia, help can be hard to find.
Most healthy adults should aim for 7 to 9 hours of sleep a night, though the exact amount depends on your age, activity level, and health status. It's important to stick to a consistent sleep schedule, going to sleep and waking up at the same time every day.
Gen Z stays up late due to a combination of technology (blue light, endless content), significant stress and anxiety (FOMO, financial/global worries), biological shifts (natural teenage circadian rhythm), and "revenge bedtime procrastination," where they sacrifice sleep for personal time, often in bed, scrolling social media. This digital-heavy, high-stress lifestyle creates overstimulation and a misalignment with natural sleep patterns, leading to chronic sleep deprivation, notes the American Academy of Sleep Medicine and the Sleep Health Foundation.
While generally beneficial, two forms of silence can be harmful. Trauma lies at the heart of selective mutism. Silence in the context of political repression enables authoritarianism.
Musk goes to bed around 3 a.m. and gets about 6 hours of sleep every night. Although he's not getting eight hours a night, Musk has upped his sleeping schedule from being nearly nonexistent in the past. In May 2023, Musk told CNBC that he's no longer pulling all-nighters.
YOU'RE BEING TOO LOUD: Ear doctors recommend wearing hearing protection for the Taylor Swift concert (and any concert) which can hit more than 100 decibels. At that level, it can cause damage to your ears both in the short term and long term.
Noise Metrics
The Sound Exposure Level ( SEL ) metric represents all the acoustic energy (a.k.a. sound pressure) of an individual noise event as if that event had occurred within a one-second time period.
A: Yes, sleeping from 10pm to 5am provides seven hours of rest, which is within the recommended range for most adults. However, everyone's sleep needs are different. Pay attention to how you feel during the day. If you're tired, you might need to go to bed earlier or adjust your morning wake-up time.
Signs of poor core sleep (deep, restorative sleep) include waking up foggy, daytime fatigue/energy crashes, poor concentration, irritability, frequent illness, memory issues, and mood swings, indicating your brain and body aren't fully repairing and consolidating memories. You might also experience increased sugar cravings, slow muscle recovery, and a weakened immune system.
Your Fan Could Be Causing Congestion Or Poor Sleep
The biggest issue with keeping your fan on overnight is the dust and allergens it can stir up and spread around. Whether from the blades or just general particles around the room, the air is pushing these potential allergens out and into your sinuses.
The healthiest noise for sleep depends on preference, but pink noise (steady rain, waves) and brown noise (deep rumble, heavy rain) are often cited as healthiest for deep, stable sleep by calming the nervous system, while white noise (hiss) is great for masking disruptions, with all working best at low volumes to mask jarring sounds, creating a more consistent soundscape for better rest.
If you find you need complete silence, it may be because you are particularly sensitive to auditory stimuli. Noise can trigger stress responses in the body, even at a subconscious level, preventing you from reaching the deeper stages of sleep.