A 12-year-old needs 9 to 11 hours (or sometimes 9 to 12) of good quality, uninterrupted sleep per 24-hour period for healthy development, growth, learning, and mood regulation, as their brains process information and rebuild connections during sleep. While some might need slightly more or less, this range is the standard guideline for school-aged children.
How much sleep someone needs depends on their age. The American Academy of Sleep Medicine has recommended that children aged 6–12 years should regularly sleep 9–12 hours per 24 hours and teenagers aged 13–18 years should sleep 8–10 hours per 24 hours.
An 8:00 pm bedtime is often appropriate for a 12‐year‐old when it produces roughly 9--12 hours of sleep and supports daytime functioning. Prioritize total sleep time, consistency, and healthy pre‐sleep routines; adjust slightly based on sleep onset, daytime alertness, and family needs.
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).
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.
Whilst boomers and millennials may use the 😂 emoji, this has long since been deemed 'uncool' (or 'cheugy') by Gen Z. Instead, this has been replaced by the skull (💀) or the crying emoji (😭), dramatising the idea of 'dying with laughter'.
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.
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.
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.
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.
Keep your child active during the day but avoid strenuous exercise before bedtime. Try not to schedule too many activities, especially at night. Your child should avoid drinks with caffeine, such as sodas, energy drinks, coffee and tea, especially in the afternoon and evenings.
Gen Z goes to bed early due to a combination of prioritizing mental health, embracing wellness trends (often seen on TikTok), economic pressures like the gig economy, and a rebellion against hustle culture, viewing sleep as self-care and a way to combat burnout by creating structured routines and setting boundaries against constant demands.
Study finds daytime naps good for older kids, not just toddlers. UC Irvine researchers found that kids ages 10-12 were happier and had more self-control if they took midday naps. Back to school means getting kids back to their regular sleep patterns.
Einstein slept nearly 10 hours a day. He was known to be a firm believer in the importance of a good night's sleep, often aiming for around 10 hours of rest. However, his approach to sleep was somewhat unconventional.
Best Foods for Sleep
Depending on the cause, the symptoms of hypersomnia may include:
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.
The 3-2-1 sleep rule is a simple wind-down routine: stop eating and drinking alcohol 3 hours before bed, stop working/mentally stimulating activities 2 hours before, and turn off screens (phones, TVs) 1 hour before sleep, helping you transition to rest by reducing stimulants and preparing your mind and body. It's often part of a larger 10-3-2-1-0 rule, which also adds no caffeine 10 hours prior and no hitting snooze (0) in the morning.
The Countries That Sleep for the Longest and Shortest Times
So, who is getting a good night's sleep? Citizens in Northern European countries, Australia and New Zealand have the highest proportion of people getting the recommended 7 to 9 hours sleep a night.
Yes, $5,000 is generally more than enough for a single person for a week in Japan, even covering flights from North America/Europe, allowing for comfortable mid-range travel with nice meals and experiences, but it might be tight for a couple or if you're aiming for extreme luxury or extensive shopping; budget travelers can do it for much less, while luxury travelers could easily spend more. Your biggest variables will be your flight cost, accommodation choices (business hotels, ryokans, or hostels), and dining habits (convenience stores vs. high-end sushi).
The "Japan 5-minute rule" refers to extreme punctuality, meaning you should arrive 5 minutes before a scheduled time (e.g., 9:55 AM for a 10:00 AM meeting) to be considered "on time," as being exactly on time is seen as late, showing respect and reliability; it's part of the Japanese concept of go-fun-mae koudou (five-minute prior action). This emphasis on being early is deeply cultural, contrasting with many Western norms, and applies to business, appointments, and even trains, where delays over 5 minutes warrant apologies and certificates.
Yes, the Navy SEAL sleep trick (an 8-minute power nap with elevated legs) is a real technique for quick rest, popularized by former SEAL Jocko Willink, that helps improve alertness and reduce fatigue, though its effectiveness depends on individual relaxation skills and it's not a substitute for full nighttime sleep. The method involves lying down, elevating your feet above your heart (on a chair or couch), relaxing facial muscles, dropping shoulders, and clearing your mind for about 8-10 minutes to promote relaxation and blood flow, preventing grogginess.
Giraffes
Adult giraffes can go weeks without sleeping and when they do sleep, it's only a little catnap of around 30 minutes a day in short 5 minute bursts at a time. Being such large and slow creatures they are constantly on guard against predators so they often avoid laying down and sleep standing up.