www.nlm.nih.gov/medlineplus/ency/patientinstructions/000355.htm
"Screen time" is any time that is spent in front of a screen, such as a TV, computer, or video game player. Screen time is sedentary activity, or being inactive while sitting down. Very little energy is used during screen time.
Most children spend about 3 hours a day watching TV. When you add in other screen time activities, it is closer to 5 - 7 hours a day.
Too much screen time can:
Increase your child’s risk of becoming obese
Make it harder to get your child to go to bed and fall asleep at night
Increase the chance that your child will develop attention problems, anxiety, and depression
Screen time increases your child’s risk of obesity because:
Sitting and watching a screen is time that is not spent being physically active.
TV commercials and other screen ads can teach children to make less healthy food choices. Most of the time, the food in ads aimed at kids is high in sugar, salt, or fats. It is not nutritious.
Children eat more when they are watching TV, especially if they see ads for food.
Computers can be helpful when kids are using them to do schoolwork. But surfing the internet, spending time on Facebook, or watching YouTube videos is considered unhealthy screen time.
But more importantly screen time is only safe when monitored closely and you won't, after time you'll just enjoy the peace