Why don't loud snorers wake themselves up?
ENGLISH
If you are a loud1 snorer2 and you have got a sleeping partner3, you might be the object of4 angry complaints5 in the morning for disturbing6 their sleep. But there are some reasons why you did not wake up7 as a consequence of your own snoring8.
When we sleep we go through different stages9 and depending on which stage we are in, our body changes its tolerance10 towards11 loud noises. Thus12, during the deep13 'slow-wave14' stage of the sleep cycle our body might be unaware15 of snores16 louder than 100 decibels17, which is higher than the noise a fire alarm18 makes. However, this stage lasts19 for only twenty percent of the night, or just20 over21 an hour and a half from an average22 eight-hour sleep.
The majority of time people are going through shallow23 sleep and they can be woken up24 by their snores dozens25 of times without even realizing26 it. Loud snorts may wake a person for a few seconds, but this is such a short time that the person doesn't completely wake up, neither27 is it possible to remember it the next morning. This means that snorers will be unaware of their broken sleep, but they will probably feel sleepier28 during the day.
Adapted from Popular Science, December, 2009 · Level: B2
1 loud: adj. noisy
2 snorer: n. the person who makes noise wile sleeping
3 partner: n. mate, couple
4 be the object of: expr. be the aim of, be subject to
5 complaints: n. when someone says something is wrong or not satisfactory
6 disturbing: v. to interrupt
7 wake up: v. stop sleeping
8 snoring: n. the action of making noise while sleeping
9 stages: n. part
10 tolerance: n. ability to deal with
11 towards: prep. with respect to
12 Thus: adv. so, this way
13 deep: adj. low
14 wave: n. curve
15 unaware: adj. unconscious of, ignorant
16 snores: n. the noise a person makes while sleeping
17 decibels: n. unit of measure for sound
18 fire alarm: n. a device that rings when there is a fire
19 lasts: v. take time
20 just: adv. only
21 over: prep. more than
22 average: adj. typical, usual
23 shallow: adj. not deep
24 woken up: v. cause to stop sleeping
25 dozens: n. a quantity of twelve
26 realizing: v. be aware of, notice
27 neither: conj. and not
28 sleepier: adj.comp. willing to sleep
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¿Por qué no se despiertan las personas que roncan con sus ronquidos?
ESPAÑOL
Si eres un gran roncador y duermes en pareja, puede que seas objeto de sus airadas quejas por impedirle el sueño. Pero existen varias razones por las que tú no te despertaste con tus propios ronquidos.
Al dormir pasamos por distintas etapas y dependiendo de la etapa en la que estamos, nuestro cuerpo varía su tolerancia hacia el ruido intenso. Así, durante la etapa profunda de "ondas lentas" del ciclo del sueño, nuestro cuerpo podría no apercibirse de los ronquidos de una intensidad superior a los 100 decibelios, tasa superior al ruido que hace una alarma contra incendios. Sin embargo, esta etapa tan sólo ocupa el veinte por ciento del sueño, o algo más de una hora y media de un sueño medio de ocho horas.
Durante la mayor parte del tiempo las personas tienen un sueño ligero y son susceptibles de despertarse con sus ronquidos varias docenas de veces sin siquiera darse cuenta. Un ronquido fuerte es capaz de despertar a una persona durante unos segundos, pero se trata de un periodo de tiempo tan corto que no llega a despertarse del todo, ni tampoco lo recordará a la mañana siguiente. Esto quiere decir que las personas que roncan no serán conscientes de haber tenido un sueño interrumpido y probablemente se sentirán más somnolientas durante el día.
Adapted from Popular Science, December, 2009 |