its not a disease - its called get out and do some exercise.
Every being on this planet (be it animal or human) is by nature, coded to use up the energy that it builds up.
Try to keep a dog indoors for a week with no exercise - check out what happens. But after you take it out for a 2 hour exercise and tire him out, he will come back home, and fall asleep like a baby.
I love modern's society tendency to attach the word "syndrome" to justify shit. "oh, my kid cant pay attention - he must have ADD syndrome. Lets pop some pills in him."
