judo look fine too.. not much fighting alot gripping and turning someone over. good for close self defence.Aikido is a non-aggressive martial art. The fundamental principles of Aikido does not encourage self-defense at any cost. Aikido does not encourage children to imitate the Power Rangers or hands and feet Ninja Turtles of his friends, brothers and sisters, dogs and cats. Aikido techniques when someone else starts to break the rules such attacks. Aikido teaches kids that fighting is a last resort to resolve conflicts.