What are musculoskeletal benefits of exercise?

• A. Decreased muscle strength
• B. Increased muscle efficiency/flexibility/coordination; reduced bone loss; increased efficiency of nerve impulse transmission
• C. Increased joint stiffness
• D. No effect on bones

Answer: (B)

Regular exercise strengthens how the musculoskeletal system works as a whole by improving muscle function, joint mobility, bone health, and neuromuscular communication. The best answer captures multiple connected benefits: muscles become more efficient, flexible, and coordinated; bone density is helped to resist loss, which lowers osteoporosis risk; and nerve signaling to muscles becomes more efficient, supporting better motor control and quicker, more coordinated movements. These combined effects reduce injury risk and enhance functional performance.

Why the other ideas don’t fit as well: decreasing muscle strength would impair function, increased joint stiffness would limit movement and raise injury risk, and saying there’s no effect on bones ignores the well-established bone-building effects of many forms of exercise, especially weight-bearing and resistance training.