Some things to understand and internalize in your beginning Aikido career are: maintaining your balance, proper distance and timing, the most economical way of walking, the need to get off the line of force, do not confront force with force, and utilizing your opponents off-balance points.
Maintaining your balance requires good posture. Your feet should be about a shoulder width apart, most of your weight on the balls of your feet, knees slightly bent, and your shoulders over hips. Even with good posture and a balanced stance, if you are stationary, there are eight major points of off-balance. The off-balance points are North, South, East, West, North-East, South-West, North-West, and South-East. So, we learn the importance of movement in maintaining balance.
Proper distance and timing in Aikido, maai in Japanese, refers to the minimum distance and time you should allow your opponent before you respond. Maai is more than this, but is at least this. For most times, maai will be about six feet away, just out of reach where your opponent cannot hit or kick you without moving one step closer. Learning to judge where and when you must move in response to an attack is a necessary part of Aikido.
In Aikido, we walk differently than most people have learned to walk. Most of us learned to walk pushing off with our back foot, stretching out our front foot, and striking the ground with the heel of the front foot. This produces an up-down body motion and wastes a fraction of a second as we shift our weight to the back foot in preparation for the step. In Aikido, we use less energy and time when we step. If we make a left step, we begin by lifting our left knee until our weight drops to the left side, step with the left foot striking the ground first with the ball of the foot, then move the right foot up to balance. This produces a down-up body motion.
Common to a lot of martial arts and self-defense courses, Aikido requires movement off the line of force. The line of force is the direction your opponent is moving toward you. For instance, if a punch is coming directly at your face, the movement of force is from North to South. A simple step on your part to the North-West, West, South-West, North-East, East, or South-East, will take you off the line of force. One of the first things you will learn is the Walking Kata. The Walking Kata teaches all the basic movements of Aikido. Practically every movement in the Walking Kata takes you off the line of force.
Unlike most other martial arts, such as Karate, Tai Kwon Do, Kick Boxing, and Boxing, in Aikido, we do not meet force with force. If someone tries to hit or kick, we will not meet that force with a block or strike. Instead, we blend our movement with the attacker’s movement and vector the energy in a direction we want it to go. Whether we enter quickly or float with our opponent, our objective is to blend with their energy and create off-balance. Some Aikidoka use strikes in their techniques, but these strikes are not to knock down the opponent, but simply to distract and off-balance.
Understanding and paying attention to your opponent’s off-balance points is critical to Aikido. When your opponent gives you his energy to use, vector that energy to one of his off-balance points and he falls down. If he does not fall down, then his recovery takes him to another, more dangerous, off-balance point. Keep sending his energy, and your own, to these off-balance points, and he eventually will fall.