When you are doing homework, sometimes your eyes may suddenly twitch (抽动). You may hear some superstitions (迷信) about this. For example, if your right eye jumps, you will hear good news. If your left eye jumps, you will hear bad news.

    But science can tell you that it has nothing to do with these superstitions. It is just a movement of your muscles (肌肉). There are a few reasons why this happens.

    According to ZME Science, when you feel stressed or tired, your eyes will twitch. This tells you that you need to get more rest.

    Looking at a TV or computer screen for a long time can also make your eye twitch. Looking at screens can make your eye dry (干涩的). So it twitches to make itself wet.

    Lacking(缺乏) some minerals (矿物质) in your diet(饮食) is another reason. Eating food such as almonds (杏仁) or spinach (菠菜) can be helpful.