Which of the following is NOT one of the ten principles of conditioning?

In the context of athletic conditioning, the principles serve as guiding frameworks to improve performance and reduce the risk of injury. Among these principles, safety, overload, and consistency are indeed critical components of a conditioning program.

Safety is paramount in all athletic training practices, ensuring that athletes engage in exercises and activities that minimize injury risk. Overload refers to the necessity of increasing workloads progressively to enhance strength and endurance, which is essential for athletes to achieve improvements in their performance. Consistency underscores the importance of maintaining a regular training schedule to achieve the desired physical adaptations.

On the other hand, while nutrition plays a significant role in an athlete's overall performance and recovery, it is not classified as one of the ten principles of conditioning. Instead, nutrition serves as a supportive element that complements the training process but does not directly fall under the operational principles of conditioning itself.