What is a key function of warm-up?

• A. It increases muscle soreness post-workout.
• B. It increases tissue temperature, elasticity, nerve conduction, and readiness of joints.
• C. It depletes glycogen stores to boost fat oxidation.
• D. It guarantees performance improvements.

Answer: (B)

Warm-up functions to prepare the body for activity by priming the systems that drive movement. When you start with light activity, tissue temperature rises, which makes muscles and connective tissues more pliable and efficient. That increased elasticity helps joints move through their ROM with less resistance and lowers the risk of strain. Nerve conduction speeds up, which sharpens reaction times and coordination, so you can recruit muscles more quickly and smoothly. The joints sit cooler and less stiff, while synovial fluid becomes more fluid, aiding smoother movement. All these changes also support faster energy delivery at the start of exercise, so you can generate force more quickly and feel more ready mentally.

Saying warm-up guarantees better performance isn’t accurate, because many factors influence performance on any given day. And warm-up isn’t about making you sore or depleting energy stores; if anything, it helps prevent excess fatigue and soreness by preparing the body gradually.