On rainy days, many people are inclined to be more vulnerable to assaults from drowsiness, which makes them easily lethargic. People fall asleep quickly, but wake up groggy. Why?
Decreased Sympathetic Activity
We all know that human sleep depends on biological clock in most cases, and the main factor affecting the biological clock is natural sunlight. However, except from the sunlight, the air pressure also matters. When rainy days come, the air pressure drops accordingly and leads to the reduction of oxygen in the air, which further results in the decline of people’s vitality. Due to oxygen reduction, the sympathetic nerve that excites the brain is devitalized, giving way to the parasympathetic nervous system that relaxes the body to lead the way, so people are more likely to be nodding off during rainy days.
The rhythmic pitter-patter White Noise decrease brain activity
Rain produces a sound like white noise. What is white noise? Briefly, white noise is a consistent noise having equal power across hearable frequencies, such as the sound of water flow, birds chirping, waves, breeze, etc.
Some people find it difficult to fall asleep in a very quiet or noisy environment, whereas rather easily when there is soothing and regular sound. Obviously, it is considered having to do with our auditory system. When we are asleep, our ears are always on standby, keeping an ‘eye’ out for various noises and delivering signals to wake ourselves to sudden noises. Here is where white noise comes in. White noise has an advantage of covering other noises by the attractive soothing frequencies.
The soothing frequencies form a single, rhythmic and long-term stimulus that leads to emotional turndown and inactivity of various parts of the body, spreading the inhibition effects from the cerebral cortex to the hypothalamus, which equates to the source of sleepiness. To make things easier to understand, think of mothers’ gentle and rhythmic patting on babies to coax them to sleep, the rhythmic roaring of a train that gradually makes people feel sleepy.
White noise is called ‘Natural Lullaby,’ and is put into extensive applications. For example, Queen Charlotte’s and Chelsea Hospital cooperated with a medical equipment company to produce the first white noise sound maker machine, which is widely used today in baby rooms to calm a fussy baby. Besides, there are also online websites providing free white noise, an all-natural sleep aid.
Rains brings about melatonin，seriously？
Melatonin is a hormone produced in the brain of humans that can prevent aging, regulate the immune system against tumors, adjust impact from time differences and more. Among them, one of the important functions is to promote sleep, and for this reason melatonin is exploited into natural melatonin sleeping tablets nowadays for those who are seeking sleep aid.
According to studies, melatonin is produced five to ten times during nights more than the day. The more rays blocked, the more melatonin in people’s bodies grows. On rainy days, it is hard to see sunlight, so when we go back to the topic about why we easily feel sleepy during the rain, the reason turns out as plain as the nose on your face.
There exists a conjecture that being able to fall asleep quickly on rainy days has some certain association with evolution. In ancient times, the stormy lightning struck, hurt and scared animals, so they preferred not to wander during the rain. Also, insects and birds would hide during rainy days. Large animals who dined on them found no chance to hunt and had to hibernate. It worked the same for humans. Hibernation on rainy days seems to take root in the life of all living things since then.
Through millions of years of evolution, the behavioral orientation of hibernation is recorded in heredity, in the meantime, proved by Behavioral Genetics, which focuses on the interaction between genes and environment. Today, animals still possess the natural instincts, including humanity. Therefore, it is considered that it may be an instinct to feel relaxed and drowsy in rainy days.
Besides what we have mentioned above, another factor having you felt reluctant to leave your bed could be what you are lying on—Nighslee mattresses and pillows.
Nighslee concerns about comfort and health. With memory foam providing form-fitting features to correctly support the body, Nighslee employs cooling AirGel™ technology within the top layer, innovatively creating an optimum condition for rainy naps.
Nighslee cool bedding sets have won a vast number of comments from customers:
—Just feel like lying on clouds;
—This has to be one of the best mattresses that I've ever laid on, its comfortable and I'm finally able to get a full night's rest;
—My cat just won't leave my bed anymore lol...
Hibernation on a Nighslee mattress on a rainy day is definitely an adorable idea.