Figure 3. Boxer - boxer coordination (i.e. sparring) spontaneously emerges. The punching unpredictability (H) (dashed line) and efficiency ratio (E) (dotted line) minima, located around D =1.2 and D = 0 are the attractive states, and their maxima located around D = 0.6 are the repellent states of the coordination. The global minimum is located around D =1.2 and represents the optimal strategic position area in which boxers continually spend the most of time since it minimizes the unpredictability, efficiency ratio and consequently the efficiency of the opponents punching actions.