Question

why is it important to warm up before starting a weight - training session?
para poder levantar pesas más pesadas.
para tonificar los músculos.
para fortalecer los músculos.
para evitar lesiones en los músculos.

Explanation:

Warming up before weight - training increases blood flow to muscles, improves flexibility, and prepares the body for physical activity. This helps in reducing the risk of muscle strains, sprains, and other injuries. While warming up may have some secondary effects on muscle tone or strength perception, its primary and most important function in a weight - training context is injury prevention.

Answer:

Para evitar lesiones en los músculos.