Which of the following is NOT a benefit of muscle conditioning?

In the context of muscle conditioning, the most appropriate choice is the assertion that increasing muscle mass indefinitely is not a benefit. Muscle conditioning does strengthen muscles, enhance functional fitness, and improve overall health, which can lead to increased muscle mass; however, muscle mass does not continue to increase indefinitely for everyone. Factors such as genetics, training program, age, and hormonal levels all influence how much muscle a person can gain.

The benefits of muscle conditioning encompass improving strength that translates well into various physical activities, including cardiovascular training, which enhances endurance and performance. It also plays a significant role in preventing osteoporosis by stimulating bone density through resistance training, contributing to overall bone health. Additionally, by improving strength and function, muscle conditioning indeed makes everyday activities easier and enhances the quality of life.

Therefore, while muscle conditioning contributes to muscle growth up to a point, the idea that it could indefinitely increase muscle mass oversimplifies the complexities of human physiology and training adaptations.