Aikido is a Japanese martial art developed by Morihei Ueshiba (often referred to by his title 'O Sensei' or 'Great Teacher'). The Japanese word Aikido consists of three characters: Ai, Ki, and Do. It means "a way of life through harmony with nature".
Aikido is a non-violent art of self-defense and unlike other martial arts, has no offensive techniques. Aikido teaches people how to calmly accept and control an attack rather than to react violently to a violent situation. An attack can be looked at as an extension of energy toward a person; an outpouring of a force with violent intent. In Aikido, force is never met with force, but with a gentle blending of our energy with the energy of the attacker. Upon closer examination, practitioners will find from Aikido what they are looking for, whether an applicable self-defense technique, spiritual enlightenment, physical health or peace of mind. O Sensei emphasized the moral and spiritual aspects of this art, placing great weight on the development of harmony and peace