Which of the following is NOT a benefit of flexibility?

Flexibility primarily involves the ability of muscles and joints to move through their full range of motion. It offers several benefits, such as reducing the risk of injury by allowing muscles and joints to function properly, assisting with posture by enabling greater balance and alignment, and releasing tension after physical activity, which helps in recovery and relaxation.

Improving muscular endurance, however, is more closely associated with the capacity of muscles to perform repeated contractions over time without fatiguing, which is influenced more by strength training and cardiovascular conditioning rather than flexibility itself. Therefore, it does not fall under the direct benefits resulting from increased flexibility, making it the option that does not align with the other benefits commonly attributed to flexibility.