What is identified as the optimal duration for mental practice?

• A. 10 minutes
• B. 20 minutes
• C. 30 minutes
• D. 60 minutes

Answer: (B)

Mental practice is most effective when done in a session around twenty minutes because it provides enough time for vivid imagery and step-by-step planning without overloading attention or imagination. In a 20-minute session, you can cycle through the key movements, sequence them correctly, and rehearse decisions and adaptations, which helps encode the motor pattern and decision process in your brain. Going longer tends to bring fatigue, mind wandering, or a drop in imagery quality, which reduces effectiveness. Shorter sessions, like ten minutes, may not yield enough rehearsal to solidify the skill, while much longer blocks show diminishing returns. In practice, about twenty minutes hits that sweet spot where cognitive load is managed, and the mental representation of the task remains crisp and useful for transfer to real performance.