when is it recommended to do it, for how long and when is it harmful to health

modern life

Daytime sleep has multiple health benefits, but it is important to take into account factors such as the duration, place and time in which we practice it.

14/2/2023

My fellow sleep specialists and I are campaigning to rehabilitate napping and show that short naps are an excellent and respectable sleep management strategy. They can make you smarter, faster, and more confident than you would be without them. They should be widely regarded as a powerful weapon in the fight once morest fatigue, and the person who chooses to nap should be recognized as a hero.

With these enthusiastic words, Willian C. Dement (1928-2020), one of the American pioneers in sleep medicine research, extolled the virtues of a nap in his book Promise in Sleep (2000). Should we listen to him or was he exaggerating? Are they always recommended? But before tackling the question, let’s recall the cultural origins of this custom.

The sixth hour break

Taking a nap or taking a nap is a deeply rooted habit in Mediterranean countries. Anglo-Saxon speakers have adopted the Spanish word “siesta” to refer to the period of sleep established at noon, following lunch, while brief naps at other times of the day are called naps.

Sleep specialists use the Anglicism nap o napping to refer to those brief periods of sleep that occur at times other than siesta, which in colloquial language would be “taking a nap.”

It was probably justified by fatigue, the time of the day (noon is the hour of greatest physiological sleepiness) and the low blood sugar levels in these circumstances.

At present, the siesta is a habit that enjoys a good reputation, but you have to know use it. Below we give some clues and tips to throw it at us with a scientific basis.

1. When is it recommended and when is it contraindicated?

Nap and work. Taking short naps at work has traditionally been seen as provocative. Today, however, it is normal for workers to nod inside or outside the place where they carry out their workday when they do shifts.

In recent decades, short naps have found their place as a prevention strategy to combat sleep deprivation in shift workers or with night time and to address jet lag (jet lag).

Nap and school. Except in individual cases, school children over the age of three do not need to take it. It reduces the time they spend in bed and the length of their night’s rest, and increases sleep latency (the time it takes a child to fall asleep). Nighttime sleep is more crucial for the development of cognitive functions than daytime sleep.

Nap and drive. Nodding off is one of the main recommendations from experts to combat drowsiness behind the wheel and prevent traffic accidents. During a campaign in 2013, the European Sleep Research Society stressed the importance of taking short stops and naps when driving. In many parts of the world, a distinction is already made between driving while fatigued and driving while drowsy.

2. Health benefits

Some studies show that taking a 30-minute nap in the followingnoon on a routine basis (three or more days per week) reduces cardiovascular accidents by 30% in healthy individuals. It also decreases the chance of coronary heart disease among working men with sleep debt during the week.

In contrast, a long nap (more than 60 minutes) instead of a short one (less than half an hour) it is linked to an increase in cardiovascular risk, hypertension, type 2 diabetes and metabolic syndrome in the elderly.

3. The right duration and the right moment

Naps of less than 20 minutes generate only superficial sleep (stages N1 and N2, within non-REM phases). When these dreams contain only stage N1, they do not produce a clear cognitive recovery, in contrast to those that reach stage N2.

On the other hand, lengthening them can cause the opposite effect: it is the so-called “inertia or drunken sleep”, which will suppress the cognitive advantage of taking a nap. This can happen if it lasts more than 20 minutes and we enter deep sleep (phase N3).

Choosing the moment is also important. In the early followingnoon, sleep falls quickly, is more efficient, and has a recovery N2 phase, unlike late naps. Also, doing them at the wrong time can decrease your recovery power.

4. Final recommendations

Put her to sleep without complexes. If you are sleepy and have the opportunity to take a nap, you should not fight once morest this uncontrollable urge, because it will have a good impact on your physical and mental state in the hours that follow.

Make sure you have a nice environment. Find a place with an acceptable noise level and without excessive lighting.

Don’t do it too late. The sooner the better. And no later than five in the followingnoon.

Take a nap as a rule. There is a greater benefit if naps are taken on a regular basis, as a beneficial habit for health.

Do not extend it more than half an hour. Nap time should be marked for personal reasons, but ideally it should last between 10 and 30 minutes.

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