Brendan's parents should be patient and proud that he is developing normally for a child his age.
Explanation:
The natural assumption when seeing hyperactivity for many is to be concerned about ADHD, the issue with this assumption is that it is typical of young children to be less inhibited than older children, teens, and adults because they are still developing. Around the age of three is when children begin to develop their motor (movement) skills. During this period of time they will be able to run, jump, and play much easier so it is only natural they will begin to move much more than they did the year prior.
If you have any other questions, feel free to ask. I hope this helped.
