Matter is female, a sword. Spirit is male, a spear. The left foot (leg) is male, and it stands in heaven. The right foot (leg) is female, and it stands on earth. Your body represents the central pillar of creation. The right foot is the base, the left foot responds in unlimited variations. Left represents masakatsu (true victory) and the male principle; right represents agatsu (self-victory) and the female principle; their integration is katsuhayabi (victory right here, right now), the birth of all techniques.
