Striking is the act of fitting a weapon to a target. Availability of targets may change very quickly, availability of weapons may change very quickly. Learning to recognize these changes and adapt to them requires more time spent striking targets that are moving unpredictably and changing range than targets moving predictably or not moving at all. The speed and intensity of these activities should be varied to emphasize different attributes: tracking/accuracy, reaction time, fluidity, and power. Tracking, fluidity and reaction time are more important than focusing exclusively on power. Reflection on which changes in target and range present the most difficulty is vital.