Energy Systems
Description: The pathways the body uses to create ATP (energy). For a 5km run, the Aerobic System is dominant, though the Anaerobic Glycolytic system kicks in during sprints or uphill sections.
Clarification Question: Which energy system are you primarily using at the 3km mark of your run, and what "fuel" (food source) is it likely using?
Respiratory System
Description: The organs (lungs, trachea, diaphragm) responsible for taking in oxygen and removing carbon dioxide.
Clarification Question: Explain the process of "gas exchange" at the alveoli and why it becomes faster during a hard run.
Cardiovascular System
Description: The heart, blood, and blood vessels that transport oxygen to working muscles.
Clarification Question: Explain how