Question

Which activity below helps to improve cardiorespiratory endurance? A. Swimming B. 40-yard dash C. Weight lifting D. Driving a car

Answer 1

A. Swimming.

For swimming one has to not only hold their breath at the right times, but improve their ability at holding it and inhaling.

None of these other choices put more strain on the respiratory system than Swimming does.

Answer 2

B, 40 yard dash.  It will really get your heart beating.