Why do we want to sleep on a rainy day? Science

In the last two days, it began to rain again everywhere.
the most painful day of this kind is to open your eyes and go to work.
know, rainy days and sleep is the best match Oh! Want to sleep in bed all the time, always sleep, sleep all the way... So the question is, why do we want to sleep when it rains? In fact, this is a scientific basis, quickly move the small bench, listen to me slowly and you say: the negative ion content in the air increases rain, the humidity of the air is increased, at the same time, the negative ion content in the air is also increased.
this is because lightning can produce a large number of negative ions, while the friction of rain and air also produces negative ions.
increase in negative ions can significantly improve the function of the human nervous system, cardiovascular system, blood system and respiratory system, making people more comfortable, while negative ions also have the effect of sedation and hypnosis, making it easy for people to fall asleep.
rain is a hypnotic rain sound is a rhythmic tick, this sound is like a lullaby, can promote people's sleep.
study has found that when the sound of rain enters the brain, the brain unconsciously relaxes, producing alpha waves, a state close to the state of the brain when the body sleeps.
rainy rustling, its sound frequency is generally located between 0 - 20 kHz, people are often very sensitive to this range of sound frequency, this kind of sound we call "white noise", but this noise is not disturbing, on the contrary, this sound is very harmonious.
this noise presents a uniform distribution on the power spectrum, making people very sensitive to these harmonious "noises" and weakening those annoying sounds, so that the mood becomes soothing and the whole person presents a relaxed state.
the drop in oxygen levels in the air we all have this experience, in the oxygen-deprived environment, people's ability to react is reduced.
this is because oxygen stimulates the brain and cheers us up.
days of rain, the air water vapor is more, the average molecular weight is reduced, resulting in lower air pressure, oxygen content is relatively reduced, which will let our brain appear slack, sympathetic nerve excitability reduced, and the occurrence of drowsiness.
if you lie down and rest for a while to reduce oxygen consumption, it can also ease the feeling of chest tightness before rain.
the secretion of melatonin increases the body's pineal gland secretea, a sleep-related hormone, melatonin, which is characterized by late night or when the light is dark.
rainy day because the dark clouds will block the sun, the environment becomes dim, when the pine algonosome secretion of melatonin increases, so that the body produces drowsiness.
at the same time, our eyes also produce a protein associated with sleep, and interestingly, the brighter the light, the less it is synthesized.
, on the contrary, the darker the light, the more the protein is synthesized, which is accompanied by increased human distress.
people's activities are limited by the day rain, a lot of outdoor things can not be completed, let people do nothing, for people who have nothing to do, sleep may be the best choice.
comfort is what everyone aspires to, sleep is a pleasure, no one can resist the temptation.
therefore, the rainy day want to sleep, is scientifically based, is in line with the human body's physiology.
encounter edifying days, encountering difficulties, as long as it is not too urgent, properly put, is conducive to health.
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