What is the optimal length of time for a nap? Naps can be short (15 to 30 minutes) or longer; both short and long naps can increase alertness and be useful. Take into account that sleep becomes deeper the longer you sleep, reaching the deepest level (slow-wave sleep) in about 1 hour.
One Harvard study published last year showed that a 45-minute nap improves learning and memory. Napping reduces stress and lowers the risk of heart attack and stroke, diabetes, and excessive weight gain. Getting even the briefest nap is better than nothing.
Is a Two-Hour Nap Too Long? A 2-hour nap may make you feel groggy after you wake up and you might have trouble falling asleep at night. Aim for napping up to 90 minutes, 120-minutes if necessary. Napping every day for 2 hours could be a sign of sleep deprivation and should be discussed with a doctor.
Taking a 60-minute nap has its benefits, but also has a downside. This nap allows for better cognitive memory processing, because some slow-wave sleep helps with remembering facts, places, and faces. However, waking up during slow-wave sleep causes grogginess upon waking.
Limiting your naps to 10 to 20 minutes can leave you feeling more alert and refreshed. More than that, especially longer than 30 minutes, is likely to leave you feeling sluggish, groggy, and more tired than before you closed your eyes.
A short nap of 10-20 minutes is precisely enough shut-eye to reap the many restorative benefits of napping. 30 minutes could make you feel too groggy once you're awake. A 90-minute nap is considered best for a longer option.
For most people, feeling tired when you wake up is the result of sleep inertia, which is a natural feeling you experience as you transition between being asleep and awake. This feeling generally dissipates between 15 and 60 minutes after waking, but for some it can last longer.
A short nap of 20 to 30 minutes can improve mood, sharpen focus, and reduce fatigue. If you nap for longer than 30 minutes, you may find yourself feeling more groggy and fatigued. However, naps should not replace the recommended 7 to 8 hours of sleep.
On the legitimacy of the 8-minute nap, he says “sleeping with your legs elevated can help improve sleep onset and quality as it allows blood to flow more easily throughout the body. This is the sleep science behind the 8-minute Navy Seal nap, but that's not the only thing that makes this nap potentially effective.”
A power nap that lasts 20 to 30 minutes is usually ideal. It's long enough to give you all the benefits of sleep without leaving you feeling groggy when you wake up.
Napping, in general, isn't considered unhealthy. Taking brief naps under half an hour can bring about many benefits, such as reduced fatigue, increased alertness, improved mood and improved cognitive performance. However, the duration of your nap can determine whether you see positive or negative effects.
Avoid 30-minute naps. There are no significant benefits to this length of nap. Half-hour naps cause "sleep inertia," a groggy state than can last for about 30 minutes after waking up. This is because the body is forced awake right after beginning, but not completing, the deeper stages of sleep.
A nap during the day does not replace good quality sleep at night. You should make sleep during the night a priority and use napping only when night-time sleep is not enough.
What is the optimal length of time for a nap? Naps can be short (15 to 30 minutes) or longer; both short and long naps can increase alertness and be useful. Take into account that sleep becomes deeper the longer you sleep, reaching the deepest level (slow-wave sleep) in about 1 hour.
Sleep for no longer than 30 minutes: The ideal nap duration is around 20 minutes and should be no longer than 30 minutes. This helps prevent the body from reaching the deeper stages of sleep, and it keeps a person from waking up feeling groggy.
Thus anything over ~50 minutes is a pretty solid nap as they're successfully getting through one complete sleep cycle. If they nap longer (1.5-2 hour naps are grand) that's even better, but ~50 minutes is a respectable length.
"Relax your eyes, your cheeks, your jaw and focus on your breathing. Now go down to your neck and your shoulders. "Make sure your shoulders are not tensed up. Drop them as low as you can and keep your arms loose by your side, including your hands and fingers."
Taking an eight-minute nap during the day, as recommended by a retired US Navy Seal. According to former Navy Seal Jocko Willink (great name), eight minutes is the ideal nap time: you wake up rested, without feeling groggy.
The idea of falling asleep quick enough to nap for 8 minutes before your alarm goes off doesn't sound too realistic, especially as falling asleep for most, takes much longer than 8 minutes. Equally, comparing the benefits of 8 minutes of sleep versus 6 hours of night-time sleep is nonsense.
In general, the best nap length for adults is about 20 minutes and no longer than 30 minutes. Sleeping for 20 minutes allows the napper to get a bit of light sleep to boost alertness without entering into deep sleep. Waking up from deep sleep can cause grogginess and actually worsen sleepiness.
“Napping for just 20 minutes may provide ample benefits, including improved alertness, mood, and vigilance,” says Aarthi Ram, MD, a sleep neurologist at Houston Methodist Willowbrook Hospital. It may even help you learn more efficiently.
Short naps that typically last about 15 to 30 minutes and longer naps of about 90 minutes can both be effective at promoting wakefulness, though experts most often recommend shorter naps. Research has found that a short nap consisting of light sleep can immediately reduce drowsiness after waking.
"The overall best is if you can wake up naturally because you're done sleeping," he said. On the other hand, if you're waking up early on just a few hours of sleep, you should probably try and squeeze in some more shuteye.
Most likely, you're still tired after eight hours of sleep because of these three factors: (1) you don't know your sleep need, (2) you're not taking into account your sleep efficiency, and (3) you carry sleep debt.