Sleeping for 60 minutes includes the deepest type of sleep, slow-wave sleep. Because of this, the one-hour nap is ideal for helping an individual better remember faces, names, and facts. However, a sleep cycle will not be completed in only 60 minutes, so you may not be very alert for some time after waking up.
But naps can also have their downsides. Naps for adults should be no more than an hour and probably best kept to the 15- to 20-minute range. Anything beyond that – especially considering the time of day – could have consequences.
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.
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.
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.
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.
“A power nap is a nap that's short — less than 30 minutes long,” says Safia Khan, MD, a specialist in sleep disorders and an assistant professor in the department of family and community medicine and the department of neurology at UT Southwestern Medical Center in Dallas.
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.
Strong scientific evidence shows that our brains benefit from a brief period of actual sleep (a nap), not just a quiet period, to recover from fatigue and to help restore alertness. Both short (15-30 minute) and long (1.5-hour) naps can increase alertness. During the daytime, a brief nap is recommended.
What's a NASA Nap? After years of research, NASA scientists found that power naps were able to boost their pilots' performance by 34% and improve alertness by up to 54%. The team at NASA determined that an optimal power-nap time should be anywhere from 10 to 20 minutes.
According to Willink, here's how to do the Navy SEAL power nap: Lie on the ground and elevate your feet above your heart. TikTokers add that resting them on a couch or another raised surface works well. Nap for 8 to 12 minutes (Willink says the lower end of that range is ideal for him).
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.
Unfortunately for those of us who enjoy that idea of just a few more minutes, it's not great news. Most sleep researchers says snoozing won't make you any more rested. If anything, it can make it harder for you to wake up.
Sleeping beyond the 90-minute cycle may mean you fall deeper into your sleep cycle and will find it much harder to wake up. The best answer to this question is that some sleep is always better than none. Trying to get in a power nap or achieving that full 90-minute cycle is better for you than no sleep at all.
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.).
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.
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.
Spain – Siesta
Originating in Spain and parts of Latin America, the siesta is perhaps one of the most well-known daytime snoozing traditions across the globe.
Short naps boost energy levels and help get you over the afternoon slump. They've also been linked to increased positivity and a better tolerance for frustration. Taking a quick nap can also help you feel less tired and irritable if you didn't get a good night's sleep the previous night.
Why do I feel worse after taking a nap? That familiar groggy feeling is called "sleep inertia," and it means that your brain wants to keep sleeping and complete a full sleep cycle.
Still, many of us want to know how to take a nap that won't leave us feeling more tired. The trick is to keep your nap to 20 to 30 minutes and choose the same sleeping environment you would at night. A gentle alarm clock or some pre-nap caffeine can also help you wake up from a nap with energy and a clearer head.
The National Sleep Foundation recommend taking a 20-minute nap to wake up feeling refreshed. The ideal nap duration can vary from person to person, but most professionals agree that shorter naps are better if a person's goal is to wake up feeling refreshed and alert.
Lying down isn't completely useless—it does help your muscles and other organs relax. But you'd get the same results just from reclining on the couch. So sleep is still your best friend.
After an all-nighter, you'll likely face a morning slump. If possible, you should try to take a quick 10- to 20-minute power nap to give yourself an energy boost for the day ahead. If you need a pick-me-up, consider taking a lower dose of 100 to 200 milligrams of caffeine (around one or two cups of coffee).
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.”