What martial arts principle does 'kime' represent?

The term 'kime' is a foundational concept in martial arts that refers to the concentration of force at a specific moment, particularly when executing a technique. This principle emphasizes the importance of focus, precision, and power when delivering strikes or performing techniques. The idea is that, rather than maintaining a constant flow of energy, a martial artist should harness their strength and intention to create a decisive and impactful moment in their movement.

This concentrated force is crucial in achieving maximum effectiveness during an attack or defense, making it a vital aspect of training and application in various martial arts disciplines. Kime allows practitioners to deliver strikes that are not just strong, but also quick and efficient, ensuring that the intended impact is achieved at the right moment.

The other options, while relevant in the broader context of martial arts training, do not align specifically with the unique essence of 'kime'. Fluid motion refers more to the continuous flow of movement, warm-up exercises pertain to preparing the body for physical activity, and retention of techniques is about remembering learned skills rather than the momentary concentration of force that kime encapsulates.