You can feel "refreshed" after no sleep due to temporary brain chemistry shifts (dopamine, cortisol surges) and adrenaline, but it's often a wired, not truly rested, feeling; boost alertness by getting bright light and moving outdoors, taking short power naps (10-20 min), staying hydrated, eating protein, and avoiding heavy carbs.
Some of the nation's leading sleep doctors offer tips on how to power through the day after a bad night's rest.
Yes, it's certainly possible to be well-rested with a decent night's sleep but no naps. I have done this for a good part of my life. Even now at 76, I don't have to nap every day. My mother stopped requiring me to have naps when I was two.
Thus, sleeping only 2 hours does not provide significant health benefits but is better than not sleeping at all. Ideally, you should aim for at least 90 minutes of sleep.
Not only did dopamine release increase during the acute sleep loss period, synaptic plasticity also was enhanced — literally rewiring the brain to maintain the bubbly mood for the next few days. These new findings could help researchers better understand how mood states transition naturally.
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 koala is the animal that sleeps approximately 90% of the day (20-22 hours), a necessity due to its low-energy eucalyptus diet requiring intensive digestion, making it the ultimate champion of sleep in the animal kingdom, followed closely by sloths and bats.
So no, having your eyes closed in bed does not count as sleep, but it's not like it's not beneficial either. Quiet wakefulness is an intermediary step for all of us to get to sleep on a healthy schedule, unless we are accustomed to being so exhausted we fall asleep within seconds of laying down.
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.
For most healthy adults, guidelines suggest at least seven hours of slumber. But these are general recommendations and not strict rules. "Some people need less than seven hours, while others might need more," says Eric Zhou with the Division of Sleep Medicine at Harvard Medical School.
One of the first things sleep physicians tell insomnia patients is to get out of bed if you can't sleep. The worst thing you can do when you can't fall asleep is lie in bed and attempt to force yourself to sleep. But you can't do anything that's stimulating or in violation of the basic rules of sleep hygiene.
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 every organ in the body is affected by poor sleep, the brain takes the biggest hit, showing signs of dysfunction faster than any other system. Over time, the heart, liver, and immune system also begin to show stress, which can increase your risk of chronic illness.
If you go through a period of deprivation, use these tips to catch up on sleep:
Taking a nap is often the first remedy that comes to mind if you are sleep deprived. A brief, 10 to 20 minute nap. View Source may help you feel more refreshed during the day. A mid-afternoon nap can increase working memory, learning, and mental acuity for a few hours.
What are signs of sleep deprivation?
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).
Own Your 3-Foot Space In Navy SEAL training, there's a simple but profound principle: Own your 3-foot space. It means focusing on what's directly within your control—your actions, your attitude, your effort—no matter how chaotic the environment around you becomes.
Napping with your legs elevated is a key part of the Navy SEAL nap, and it has several benefits for your overall health. Improved circulation: Keeping your legs elevated promotes better circulation, helping blood return to the heart more efficiently.
closing your eyes to the value of sleep
Resting with your eyes closed can calm your mind and help your muscles to relax. Your blood pressure drops and your heart rate slows. Resting can also: reduce stress.
The ideal nap length is either a short power nap (20-minute nap) or up to 90 minutes. A two-hour nap may leave you feeling groggy and hamper your normal sleep cycle. Generally, you want to nap for less than an hour and take it earlier in the day (such as before 2 or 3 p.m.).
[15] A complete sleep cycle takes roughly 90 to 110 minutes. The first REM period is short, and as the night progresses, longer periods of REM and decreased time in deep sleep (NREM) occur.
Alpine swifts are one of the most extreme examples when asking what animal never sleeps. These airborne endurance champions spend up to 200 days in flight without landing. Instead of traditional sleep, they rely on micro-sleeps while gliding. This allows them to rest without stopping.
The answer is “probably.” Research has shown that many animals experience a sleep phase similar to humans known as REM (Rapid Eye Movement) sleep, which is closely associated with dreaming. This phase is characterized by increased brain activity and is when most vivid dreams occur.