I have a 5 year old son who hasn't sat still since he was born except to sleep. Not only that, but he doesn't stop talking. It's like he needs to communicate like he needs the very air he breaths. We have always said, he has two speeds, on and off. Off is usually when he is sleeping. He sure keeps me young with his ideas and inventions. Young, but tired. I will say this, when he was over suppressed he was very sluggish and would rather sit and eat another sandwich than talk or play. I am glad to see him back to his old self.