Poor body mechanics can cause which of the following?

• A. Improved flexibility.
• B. Increased cardiovascular fitness.
• C. Muscle tension and fatigue.
• D. Faster reaction time.

Answer: (C)

When you move with poor body mechanics, your muscles have to work harder to compensate for misalignment and inefficient movement. That extra effort leads to muscle tension and fatigue because the same muscles are continually overloaded and not able to relax properly. Over time this can also contribute to soreness or injuries as tissues are stressed beyond their normal limits.

This isn’t about flexibility, cardio, or reaction speed. Flexibility comes from length and elasticity of the muscles and connective tissues, which isn’t improved by poor form and can actually be hindered by persistent tension. Cardiovascular fitness is built through sustained aerobic activity that trains the heart and lungs, not through how you’re currently moving. Reaction time depends on the nervous system’s speed and coordination, and while good mechanics can make movement more efficient, they don’t inherently make you react faster.