Playing with the phone before bed has become one of the things that many friends must do every day. But how harmful is playing with the phone before bed do you know? Before quitting this habit, how to play cell phones before bedtime is not harmful? Cell phone lights to the lowest night hide nest to play cell phones, try to turn the phone lights to the lowest, and then do not put the phone screen is facing the eyes, the light is direct, radiation, not to mention that it is best to tilt down about 45 ℃, do not tilt up, so that the neck to be stressed large, stretching a long time sore. Never play the phone with the body lying on its side The compression force on the left and right eyes is the largest, so go on not a month will cause deviations in vision of the left and right eyes. Pillow pressure on the eyes caused by insufficient blood supply, a long time the eyes will have a sense of expansion, short-lived image overlap, this is not drops of eye drops can be good. So, for the sake of our eyes do not lie on the side of the body to play cell phones. Do not play the phone in a prone position Prone to the elbow, the brain’s blood circulation caused by difficulties, this way is very tired, but also very easy to fall asleep and make the phone is still in the networked state, the cervical vertebrae above the formation of inert ischemia basically. The best way is to play the phone on your back This is very suitable for every part of the body, except the elbow tired, you can use the quilt pad under the elbow to continue to play, this is the best, the least impact on health way. At night the browser screen as far as possible to night mode We perceive the font is identified by the color difference reaction, the greater the color difference between the two colors, the more expensive eyesight, color: white red orange yellow green blue butt purple black, other derivative colors are covered in it, black and white is the most costly eyes, so know why the night mode is always black plus purple (or gray) it. It is best to use cool colors at night, not warm colors. Try not to play more than one and a half hours at night. There are only two memory peaks in a day: around ten o’clock in the morning and nine o’clock in the evening, the other time memory is basically no big fluctuations, but after eleven o’clock in the evening all parts of the body began a new round of metabolism, people in accepting a certain amount of external information will be screened from memory. Do not open a small desk lamp when playing with the phone at night The body will secrete protease that inhibits melanin after 11:30 pm, which can last until 4:00 am, but if you see light during this time, the body will stop secreting; there will be secretion until 1:00 pm, and then after 1:00 pm is the role of decomposition.