Answer:
When you exercise, your body needs more oxygen.
Explanation:
Answer:
When you exercise, your body needs more oxygen.
Explanation:
Your body needs more oxygen and creates more carbon dioxide when you exercise and your muscles work harder. Your muscles are working hard during exercise. As your heart rate and breathing rate increase, more oxygen is drawn into the bloodstream. The oxygen that enters your muscles turns available glucose into ATP, giving your body the energy it needs to finish your workout.
