Question

Long-distance runners often run 20 kilometers or more at a time. What body systems do you think would be most involved in the endurance or aerobic training needed to prepare for such a sport?
Body systems such as nervous, skeletal, muscular, respiratory, digestive, and cardiovascular.

Answer 1

I think the most involved would be your circular system because since your running fast you need to pump blood. Your muscular system because your moving a lot and your respiratory system because you need more oxygen