Why do athletes need to warm up?
Show answer & explanation
Answer: Boosts blood flow and heat
Stretches prevent all injuries — Wrong. Static stretching doesn't prevent injuries and may reduce power. Warm-up increases muscle temperature and blood flow for better performance/safety.
Boosts blood flow and heat ✓ — Correct! Physiological preparation! Warm-up (5-15 min light activity): (1) Increases heart rate—more blood/oxygen to muscles. (2) Raises muscle temperature—enzymes work faster, muscles contract more efficiently. (3) Improves joint mobility—synovial fluid lubricates. (4) Activates nervous system—better coordination. (5) Mental focus. Dynamic stretching (active movements) better than static (holding). Cold muscles = injury risk. Performance improves with proper warm-up!
Activates sweat glands — Wrong. Sweat activation happens during exercise. Warm-up prepares cardiovascular system and muscles through increased blood flow and temperature.