Watching TV can harm children's mental and physical health in several ways. It promotes negative and violent behaviors which children may emulate. It also leads to poorer school performance as kids spend less time on homework, outdoor activities and socializing when watching TV. Additionally, TV viewing contributes to obesity as kids consume more calories from junk food ads and become sedentary from extensive watching. TV's commercial influence can also create pressure on parents. Overall, controlling TV viewing benefits children's well-being and development.