Article in English: Some amount of time spent online is common in much of the world. Internet addiction, however, implies spending more time online than is needed for work, school, or a healthy personal life. You can start to think about whether you are addicted to the Internet by recording the number of hours you spend online each week as well as the impact that time has on other activities in your life. Too much time online might cause you to:  Be online longer than you intended. Checking your email, for instance, turns into hours of browsing. Think about being online even when you are doing other activities. Need to use the internet more and more just to have the same level of satisfaction or enjoyment Using the Internet too much can cause a variety of emotional problems. If you notice any of the following, you may have Internet addiction:  Feeling restless, angry, irritable, etc. when you don’t have as much time online or try to cut back. Using time online to escape or to relieve an emotional problem. Getting online instead of other activities you need to do or used to enjoy. Feelings of guilt, shame, or disgust due to time spent online. Inability to cut back after repeated attempts. Internet addiction can cause a variety of physical problems. However, these symptoms might not appear suddenly or be obviously connected to being online. Significant problems caused by the addiction might include:  Weight gain Weight loss Headaches Backaches Carpal tunnel syndrome Neglecting sleep to get online In addition to harming you emotionally and/or physically, Internet addiction can have detrimental effects on your personal and professional relationships. Signs that you might have a problem include include:  Loss of a job or poor work performance due to time spent on the Internet Decreasing performance at school Trouble in a personal relationship (fighting because of time spent online, for instance) A relationship has ended because of your Internet usage Lying to others (significant others, family, coworkers, etc.) about your Internet...

Summary in Vietnamese:
Theo dõi thời gian bạn lên mạng. Tìm những bằng chứng cho thấy dành thời gian lên mạng có ảnh hưởng không tốt đến tâm trạng hay sức khoẻ tinh thần của bạn. Theo dõi các dấu hiệu mà việc sử dụng Internet gây hại cho sức khoẻ của bạn. Nhận ra internet làm tổn hại đến các mối quan hệ. Tìm hiểu những dấu hiệu nghiện internet ở trẻ em.