Another study by Japanese researchers showed that coffee naps
before a memory tests helped the participants perform better in comparison to those who just took a nap
To explore the effect of sleep stages and whether memories were actively processed during the nap
, the researchers recruited an additional 14 preschoolers who came to a sleep lab and had polysomnography, a record of biophysiological changes, during their average 73-minute naps
Thirty minutes to one hour is the optimum time to nap
, indicate 42% of adults, although 14% prefer more than an hour.
There is a lot of individual variability in when children are ready to give up naps
Children who took longer naps
solved fewer puzzles and the later they went to bed, the worse they performed.
Most people don't take naps
because they are not sure how to do it without over-sleeping and missing items on their schedules," stated John Gelb, President of At Peace Media LLC.
On the other hand, Congressional recognition for three other NAPs
was more timely, in the form of the nation's highest military decoration, the Medal of Honor.
In fact, the volunteers' speed in accurately doing the task increased as much after taking a 90-minute nap
that contained both sleep stages as had previously been observed for people granted a full night's slumber (SN: 7/22/00,p.
Sleep experts agree that naps
should either be relatively short (20 to 30 minutes) or very long (90 minutes).
For people who are sleep deprived, a 10-minute nap
is more effective than a 30-minute nap
in producing an immediate and sustained recovery in alertness, mood, and performance.
ECONOMIC PRESSURES THREATEN TO END A CHERISHED SPANISH TRADITION--THE AFTERNOON NAP
As for timing of naps
, energy levels naturally dip between one and three in the afternoon, but any time one feels sleepy is okay.
To combat sleep inertia they recommend naps
of shorter duration (20-30 minutes).
Looking ahead, trend expert Faith Popcorn predicts that naps
will become a necessary element during the workday.
But inventor Thomas Edison, who labored for days at a time - stopping only for short naps
in his lab - would have been denied WNO membership if he were alive today.