What is Practice?

• A. An activity that improves performance by muscular hypertrophy.
• B. An activity that improves performance through changes in the nervous system.
• C. An activity that improves fitness only through metabolic changes.
• D. An activity that reduces skill variability.

Answer: (B)

Practice is the repeated performance of a movement or skill with the goal of executing it more effectively. The main change happens in the nervous system—better motor planning, smoother coordination, and more efficient recruitment of muscles—so with time the movement becomes more automatic and accurate. This neural adaptation explains why practice improves performance: the brain and nerves learn to control the muscles more precisely, reducing errors and refining timing and sequencing.

Muscular hypertrophy, while it can support strength, is a structural change in the muscles themselves, not the primary mechanism by which practice enhances skill. Metabolic changes involve energy systems and endurance adaptations, which are related but not the core driver of skill improvement through practice. Reducing skill variability can occur as a result of practice, but the defining factor is the nervous system’s improved control and coordination.