Final answer:
The assertion that passive stretching requires more endurance than active stretching is false. Passive stretching is assisted by external forces, while active stretching requires muscle engagement and can increase mental focus and physical endurance.
Step-by-step explanation:
The statement that passive stretching requires additional mental and physical endurance compared to active stretching is False. Passive stretching involves a relaxed stretch, where an external force, like a partner or a prop, helps move a specific part of the body into a stretch, while the individual being stretched does not actively contribute with muscular contraction. Active stretching, on the other hand, requires the person stretching to engage the muscles to hold a position, therefore necessitating more muscular effort and potentially increasing both mental focus and physical endurance. Flexibility exercises like stretching and yoga are vital to improving range of motion and reducing injury risk, as part of a good exercise routine that also includes a proper warm-up to avoid injury.