“In today’s world, it may seem crazy to restrict electronics so drastically. But when kids are struggling, we’re not doing them any favors by leaving electronics in place and hoping they can wind down by using electronics in “moderation.” It just doesn’t work. In contrast, by allowing the nervous system to return to a more natural state with a strict fast, we can take the first step in helping a child become calmer, stronger, and happier.”

https://www.psychologytoday.com/us/blog/mental-wealth/201508/screentime-is-making-kids-moody-crazy-and-lazy.