Exercise
Today's wide range of entertainment in the form of television, computer games, internet, etc. contain a lot of rewards that can of help to increase concentration and attention. However, if it results in too little physical activity, it can make the ADHD problems worse.
Children who are sitting still too much get poor stamina, get tired easily and muscle soreness when they try something physical. The children who begin to opt out of the physical activity risk long term health issues with obesity, poor sleep and depression.
A lot of sports, such as martial arts, contain several moments where you train your impulse control and in turn, strengthens your child's self-confidence.