The World Health Organisation issued new guidelines on physical activity and sleep for children under 5. The guidelines overall echo what many parents have been saying for years.
Generally, children should move more, sit less and get enough quality sleep so that they grow up physically and mentally healthy. Children between the ages of 1 and 4 should spend at least three hours a day in a variety of physical activities, and infants less than 1 year old should also be physically active several times a day.
The WHO says that kids between 2 and 4 years old should not spend more than an hour a day watching an electronic screen, and kids younger than that should not be looking at them at all.