Which of the following is NOT a mental benefit of practicing Taekwondo?

The choice indicating increased body flexibility is not classified as a mental benefit of practicing Taekwondo. While flexibility is indeed one of the physical benefits gained through training and is crucial for executing various taekwondo techniques, it does not directly relate to mental faculties or cognitive improvements.

On the other hand, the other options directly correlate with mental advantages. Practicing Taekwondo can improve self-discipline as practitioners must adhere to training regimens, follow rules, and set personal goals. Enhanced decision-making skills come into play during sparring and technique execution, where quick thinking and strategic planning are essential. Additionally, regular training fosters better focus and concentration, as students must pay attention to their movements, instructors, and opponents to improve their performance. These elements together highlight the cognitive aspects of Taekwondo, reinforcing why increased body flexibility does not fit into the mental benefits category.