Impatience and the need to keep moving are normal for some temperament traits. It's also just an extension of hyperactivity. Some researchers have theorized that impulsivity helped our ancestors to survive in harsh environments because they were less likely to miss a meal or dodge a predator. Very typical for divergent thinkers. Highly creative, divergent people are known be very impulsive thinkers.
Ideas are really just impulsive thoughts, after all.
The thoughts of divergent thinkers are always branching out, quick to seek out anything novel and interesting, but only for a short time before they are looking for yet something else novel and interesting. All good inventors, artists and explorers are divergent thinkers. Too many TV shows with quick cut-aways and fast frame changes may encourage a child's plastic brain to develop with a shorter attention span. The newer cartoons are especially bad, as are many commercials. Kids who are suffering from depression or anxiety cannot concentrate on much of anything and are therefore easily distractible.