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.
Is a 45 minute nap good? A 45-minute nap can help pay down sleep debt and improve your thinking skills and memory. But you may also wake up feeling groggy and a 45-minute nap too close to bedtime may make it harder to get the sleep you need that night.
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.
However, research has shown that a 1-hour nap has many more restorative effects than a 30-minute nap, including a much greater improvement in cognitive functioning. The key to taking a longer nap is to get a sense of how long your sleep cycles are and try to awaken at the end of a sleep cycle.
The 60-minute rule means that you'll keep your baby in the crib for naps for at least 60 minutes from the time that they're placed down, even if they're not asleep.
The most ideal nap is the 90-minute nap. Why? 90 minutes is the length of one full sleep cycle, which includes all the light and deep (REM and dreaming) stages of sleep. A full sleep cycle nap improves procedural and emotional memory (e.g. for playing musical instruments and driving).
You should nap for about 20 to 30 minutes
In fact, getting about 30 minutes of sleep can put you in a better mood and improve your memory. According to Dimitriu, napping for this short amount of time will also improve symptoms of fatigue such as irritability, low motivation, and sleepiness.
The 90-minute sleep cycle refers to the time it takes for our body to complete one cycle of sleep. Timing sleep with the 90-minute cycle can help reduce muscle soreness, promote muscle growth, and help mental rejuvenation.
Both short (15-30 minute) and long (1.5-hour) naps can increase alertness. During the daytime, a brief nap is recommended. Long naps can be useful during emergency response when people have to work very long hours.
Most will explain the Hour Rule to mean one hour in the crib. If your child falls asleep prior to that hour ending, then you get your child up the moment they wake. If they don't sleep at all for the full hour, you get them up at the hour. This is about the extent to the Hour Rule for most.
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.
“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.
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.
According to new research, you can stay focused and productive all day with just 30 extra minutes of shut-eye. And the University of California San Francisco study wasn't looking at couch potatoes or people already getting the recommended-but-rare eight hours of shut-eye every night.
Napping longer than 30 minutes linked to higher risk of obesity and high blood pressure. Researchers say people who take daytime naps of more than 30 minutes appear to have a higher risk of obesity and high blood pressure. They noted that people who take shorter naps are less likely to have elevated blood pressure.
The 2-3-4 nap schedule is for babies who are on two naps a day. The first wake window would be 2 hours, the second would be 3 hours and the last wake window for bed is 4 hours.
A widely cited 1995 NASA study found that the “ideal” nap length is 26 minutes, after which test subjects' “performance” (reaction time, memory) improved by 34 percent and “alertness” (feeling fresh and awake) improved by 54 percent.
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.
"You can get incredible benefits from 15 to 20 minutes of napping," she says. "You reset the system and get a burst of alertness and increased motor performance. That's what most people really need to stave off sleepiness and get an energy boost."
Scientists found that people who napped for 30 to 90 minutes had better word recall – which is a sign of good memory – than people who did not nap or who napped for longer than 90 minutes. People who napped for that golden 30 to 90 minutes were also better at figure drawing, another sign of good cognition.
In that time, your body should be able to make it through one complete sleep cycle, causing you to wake up feeling refreshed. Just be sure to set an alarm since taking a nap for more than 90 minutes might cause you to feel more tired than before.
Nap SMARTLY!
It's most feasible when you intersperse your all-nighter with small naps. A 90-minute nap (or one full sleep cycle) is recommended if you don't want to wake up feeling too groggy.
The 45-minute nap is really common, and there are a few specific reasons why: Forty-five minutes is not a coincidence; it is exactly one sleep cycle for a baby. At around the 30-45 minute mark into the sleep cycle, your baby is in a lighter stage of sleep, trying to transition from this cycle to the next.