They will has stressful feeling and it has a problem of learning for examples, you will thinking about the game only untill you will be not to pay attention in the class. Some people has a feel sleepy.
The mental images also may exacerbate, including irritability, anger, poor concentration and sleep disorders.
Sometime it also has effects on mental health. Researchers Lalitha Iyadurai and Ella James of Oxford University says “If people who addicted games online, the mental images will thinking about games only. It make them has a irritability, anger, poor concentration and sleep disorders untill you will be not to pay attention in the class.