What do you think is an activity that is primarily fueled by the ATP-PC system? What do you think is an activity that is primarily fueled by the anaerobic system?
What do you think is an activity that is primarily fueled by the oxygen system?
Which of the three energy systems do you think fuels the majority of your daily activities? Defend your answer.

Also known as the phosphagen system, it consists of ATP that is already stored in muscle and creatine phosphate (CP), which rapidly replenishes ATP. ... Thus, any activity that lasts less than 10 seconds is fueled mainly by phosphagens, including a power lift, 40-meter sprint, long jump, baseball pitch, or basketball dunk .

answer; i believe its the red blood cells; plz check first good luck