As children spend more time in front of computer monitors, they typically spend less time in physical activities. The sedentary lifestyle associated with computer usage can be a prime risk factor for obesity, according to clinical psychologist Kaleyvani Geeseeny Sawmy.
Furthermore, computer use is linked to eye strain. For some children, the rapidly flashing images of certain websites and games can trigger their eyes problems, according to authors of "The Impact of Home Computer Use on Children's Activities and Development," published by Princeton University. Moreover, checking their updates on Gmail or social networks in the middle of night can cause problems in their eyes.