Get one thing: can't sleep at night? Briefly talk about the reason

As a migrant worker who leaves early and returns late, he brushes before going to bed at night mobile phone It can be said that it is one of the most relaxed moments of the day. Some self-discipline friends may go to bed when they arrive, but the author is different. The more I play with my mobile phone in the evening, the more energetic I am. It will be 1 or 2 o'clock in the middle of the night when I read a novel. The next morning, I will become a dog again, which seriously affects my work efficiency.

If you feel the same way, today the author will introduce some of the reasons and provide several solutions.

one Why I can't sleep

You may know that this is because the screen emits blue light from the pot. The mobile phone screen will emit "high-energy short wave blue light" when displaying content. This blue light will affect the photoreceptor "optomelanin", the biological cycle rhythm of the human body, and the secretion of melatonin. The level of melatonin at night will directly affect the quality of sleep, hinder sleep and dreams, destroy the circadian rhythm of the human body, and make the cerebral cortex excited for a long time.

Moreover, when using eyes at a close distance in a dark environment, the human eye will dilate its pupils and tighten its muscles in order to see the content clearly, and long-term viewing may cause visual fatigue or even myopia; quite a lot The OLED phone's screen will also have strobe, The human eye has a perception threshold for flicker. If the adjustment period of PWM dimming is higher than this threshold, it is almost undetectable, but if it is lower than this threshold, it may be caught by sensitive users. Frequent flicker will cause discomfort to the eyes.

two How to avoid?

So, how can we avoid the phenomenon of "unable to sleep by brushing the phone"?

The first is to turn on the "eye protection mode" The color temperature and brightness of the screen will be reduced to a certain extent, which can reduce the blue light emitted by the screen. Since most of the existing LED displays use RGB three color pixels, when the blue light decreases, the red and green spectra will be fused to show a color that tends to yellow, which is why Software The reason why the blue ray screen looks yellow.

However, if the eye protection mode is simply turned on, the picture of the phone may be dimmer and the eyes may be more uncomfortable, which can be said to be "useful, but only a little". According to the information queried on the network, the low danger level is that the radiance is less than 10000 W/m2/sr. No danger is 100W/m2/sr. The radiance of mobile phones and tablets is below 1W/m2/sr. Therefore, there is basically no harm of blue light generated by electronic products. The eye protection mode is more to alleviate the stimulation of light on the eyes, so that you won't be too dazzling when playing mobile phones at night.

If you are iPhone Users can consider reducing the "white point value", open the setting, search for the white point value in the upper search box, click it, open the switch, and adjust it according to their own needs. After the phone is turned on, the stroboscopic light of the phone screen reduces the burden on the eyes.

IPhone users can also turn on The "Night View" function can be accessed by searching "Night View" in the settings. After setting the time of automatic opening and closing every day, the color temperature can also be adjusted. The warmer filter can reduce the stimulation of blue light on the eyes, and even adjust all the pictures to red, which has a certain effect.

But to be honest, by adjusting the mobile phone configuration, we can solve the symptoms rather than the root causes. You need self-discipline to go to bed early. Everything needs to have a "degree". Proper use of mobile phones is good for your brain. Addiction to mobile phones will hurt your body. Let's arrange our time reasonably and enjoy a healthy life!

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