Richard Louv said this quote

A generation of children is not only being raised indoors, but is being confined to even smaller spaces. Jane Clark, a University of Maryland professor of kinesiology . . . calls them containerized kids--they spend more and more time in car seats, high chairs, and even baby seats for watching TV. When small children go outside, they're often placed in containers--strollers--and pushed by walking or jogging parents. . . Most kid-containerizing is done for safety concerns, but the long term health of these children is compromised. (35)