1. Contact Pose: This is the fundamental building block of a walk cycle. A walk cycle starts and ends with the contact pose, creating a seamless loop. When the right foot is forward, the right arm is backward, and vice versa. By moving each arm in coordination with the opposite leg, it gives balance and thrust to the animation.
2. Down Pose: The bent leg takes its weight and the arm swing is at its widest point as the character impacts the ground. It is the lowest point in the cycle. The foot of the bent leg is in full contact with the ground, and the other has just lifted up from it.
3. Passing Pose: The leg is straight up and lifts the pelvis, body and head slightly higher.
4. Up Pose: The heel of the trailing foot is just beginning to push off the ground, lifting the pelvis, body and head up to the highest point of the cycle. The leading leg is then thrown out to catch up on the contact pose that follows.