Whether getting only five hours of sleep five times a week is "okay" depends heavily on the individual, but it is generally considered insufficient and unhealthy for most adults [1]. The long-term effects can be significant.
Did you know that not getting enough sleep can cause health problems beyond just feeling tired and worn out? Recent studies have found that lack of adequate sleep is related to weight gain, sexual problems, reduced concentration, mental health problems, cancerous tumors and even Alzheimer's disease.
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.
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.
Short answer: Many people can function on 5 hours of sleep for short periods, but it is suboptimal for health, cognition, and long-term performance. Regularly getting only 5 hours increases risks and reduces resilience; occasional short nights are manageable, chronic restriction is not.
6 Tips for the Day After a Bad Night's Sleep
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.
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.
This is sometimes described as a period of 'quiet wakefulness'. But is taking a quick rest - closing your eyes, putting your feet up and clearing your mind for a couple of minutes - as beneficial as getting some sleep? The concise answer is 'no'.
What are the signs of sleep deprivation?
Although many people convince themselves they are short-sleepers, says Harris, sleeping an average of five hours a night is more often due to external factors, stress, poor sleep hygiene or sleep disorders. Just because you can get away with sleeping only five hours doesn't mean you should, the experts note.
Feeling fatigued or lethargic throughout the day, yawning frequently. Feeling irritable. Change in mood including feeling depressed, anxious, stressed, paranoid or experiencing suicidal thoughts. Low motivation.
Regardless of the insomnia aetiology, Magnesium-melatonin-vitamin B complex supplementation reduces insomnia symptoms, as well as its consequences, thus improving the patients' quality of life and preventing potential unwanted clinical, social, economic, or emotional repercussions.
A prime example is the box breathing technique, famously used by the Navy Seals, known as the 4-4-4-4 method. This simple yet effective method involves a cycle of inhaling for 4 seconds, holding the breath for 4 seconds, exhaling for 4 seconds, and then pausing for 4 seconds before the next inhalation.
David Goggins' 40% Rule suggests that when your mind tells you you're done, you're really only at about 40% of your true potential.
Still, it's clear to see that service personnel tend to struggle with divorce more frequently than many other jobs. This could be due to the increased stress and time spent away from home or might be caused by military members getting married too young in an effort to receive benefits.
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.
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.
Among the most rested countries surveyed by Sleep Cycle, an app that tracks how much shuteye people are getting, New Zealand comes top with the average Kiwi clocking up in excess of 7.5 hours per night. Finland, the Netherlands, Australia, the UK and Belgium all rank highly for sleep, too, with Ireland close behind.