What is the advantage and disadvantage of increased pulse rate during strenous physical?

Increased pulse rate during strenuous physical activity enhances oxygen delivery and nutrient supply to muscles, improving performance and endurance. However, it can also lead to cardiovascular strain and fatigue if sustained for prolonged periods, particularly in untrained individuals. This heightened demand may increase the risk of dehydration and overheating, potentially leading to adverse health effects. Balancing training intensity and recovery is crucial to mitigate these risks.