1 . Screen time includes all those hours you spend in front of your computer at work, and the time you spend playing with your cell phone or watching TV.     1     According to some research, there are some convincing reasons to make the effort to look at something else other than a screen.

It's bad for your health. Being in front of a screen is almost always sedentary (久坐的) behavior, which relates to things like lower fitness levels. Turn this around by choosing something active. You do not have to do exercise at the gym.     2     They can help you keep healthy.

It messes up your sleep. When teenagers have more than four hours of screen time per day, and especially when they use their screens before going to bed, they have trouble falling asleep. If you're not sleeping well, it will not only make you feel tired the next day, but it can also affect your performance at work or in school.     3    

It hinders (妨碍) your brain’s performance.     4     Researchers aren't yet sure why this is true, but it probably has to do with the ways that technology teaches the brain to function. If kids want to perform well in situations that involve memorization or problem solving, limit their screen time.

    5     People who spend more time online, especially young people, are more likely to struggle with communication. If interpersonal communication is important to you or part of your job, you will likely get benefits if you spend less time in front of your screen.