Long-term addiction to the Internet may have a negative impact on physical and mental health. Overuse of computers and the Internet can cause eye fatigue, headaches, neck and shoulder pain, muscle tension, and indigestion. Sitting in front of a computer for a long time could also lead to cardiovascular disease, obese, diabetes, and depression. Internet use could also affect social and interpersonal relationships. Being addicted to the Internet may lead to a decrease in contact with family and friends, affecting daily communication and social interaction. In order to maintain health and happiness, moderate use of computers and the Internet is recommended. You should not use the computer for more than 8 hours a day and should always rest your eyes and neck to maintain a healthy lifestyle.