affecting up to 80 percent of female endurance athletes.(Para. 4) Example Everyone works, from the boy who sweeps the floor up to the president. Compar eVeryone works, from the President down to the boy who sweeps the floor.• …affecting up to 80 percent of female endurance athletes. (Para. 4) Example Everyone works, from the boy who sweeps the floor up to the President. Everyone works, from the President down to the boy who sweeps the floor. Compar e