How to watch TV healthily?
First of all, the location and distance of the TV.
Try to put the TV in a corner with soft light, and the height should be appropriate, neither too high nor too low. The center of the TV screen should be at the same level or slightly lower than the eyes. When watching TV, the eye muscles are in a state of tension, and the distance between the eyes and the screen should be appropriate. Too close, it looks blurred, which is easy to cause visual fatigue.
It's too far to see clearly. Generally speaking, the distance between TV and people should be 4~6 times the diagonal of the screen. It can also be measured by a simple method: one hand is straight forward, the palm is placed horizontally, and one eye is closed. If the palm just covers the TV screen, this distance is more appropriate. In addition, when watching TV, it is best to sit in front of the screen. If you sit next to it, the observation angle should not be less than 45 degrees.
Second, the contrast of the TV and the brightness of the room.
The contrast of TV is too large, the brightness of light is uneven, and the vision is more concentrated, which is easy to cause eye fatigue. The contrast is too small, the color of the image is not clear, and it is not easy to see clearly. Some people like to turn off all the lights in the room when watching TV, so that the brightness of the screen is in sharp contrast with the surrounding dark environment. My eyes are uncomfortable after watching for a long time.
On the contrary, if the light bulb in the room is bright, the image on the screen will appear gloomy and unclear. So when watching TV, the light in the room should not be too dark or too bright. You can turn on a soft little light or a red light bulb in the room, so that your eyes will not be tired easily.
Third, watching TV should not be too long.
Watching TV for a long time will reduce our exercise, and we are at an important stage of growing our body, which will affect our height because our long bones are not stimulated. In addition, watching TV for a long time will also affect sleep, and lack of sleep will inevitably affect normal physiological functions, thus affecting health. Moreover, people's energy and time are limited. If they watch TV for a long time, their study time will be relatively reduced and their energy will be insufficient.
Fourth, carefully choose the content of watching TV.
There are always some pornographic, violent, fraudulent and negative contents in TV programs, and teenagers are a group with strong imitation ability but relatively weak resolution. If they always come back to watch such programs, it will definitely affect their physical and mental health. Therefore, teenagers should selectively watch programs suitable for their age groups, such as educational channels and children's channels. At the same time, you can also watch some positive programs under the guidance of teachers.
Verb (abbreviation for verb) Behavior and habit when watching TV.
Pay attention to the correct sitting posture when watching TV. Don't lie flat, bend your neck and back or lie prone on the table, because incorrect posture will cause neck soft tissue strain and cervical spondylosis. In addition, don't be too close to the TV, choose the right distance to avoid bad eyesight. Finally, it is not appropriate to watch TV or wolf down TV when eating, which will affect digestion and may also induce various gastrointestinal diseases.
In addition, people with ankylosing spondylitis, sciatica and other diseases should not watch TV for a long time, so as not to aggravate their illness and affect their sleep. It is not advisable to go to bed immediately after watching exciting programs. In this way, because the excitement has not subsided, it often leads to difficulty in falling asleep. In the long run, it will cause neurosis.