Increased stamina, flexibility, and muscle development occur naturally as a result of training, but the techniques themselves do not depend on strength for effectiveness. Since Aikido's movements and techniques arise from the most efficient utilization of the entire being, great power can be developed by the practitioner, regardless of physical strength. Aikido practice encompasses a broad range of training styles, and allows people to train based on their individual stage of development. As a result, Aikido can be practiced by men, women and children of all ages. Centering The Aikidoist develops a relaxed posture in which the weight of the body is directed towards its physiologic center in the lower abdomen.
Gravity is no longer a force to be overcome.
Rather it serves to support and stabilize posture. As a result, ordinary movement assumes an appearance of grace and economy. The effects of centering are mental as well as physical. In addition vitality increases, the senses are sharpened, and one is less affected by the irritations and annoyances of daily living. This state is referred to in Japan as having hara , or strong ki .