Exercise and ADHD

There has been reliable research that shows that exercise diminishes some of the symptoms of ADHD. This exercise can comprise walking, running, or basically any type of exercise. I have one child with whom I work whose Mom took her for a walk for approximately 15 minutes before school. Her teacher reported that when she entered the classroom she immediately sat down to write in her journal, which she had not done previously. This Mom also took her child for a 15 minute walk after school and found that her child was more focused on her homework and completed it more effectively in a shorter amount of time. Any questions or comments?