Question

Some teenagers seem able to skate, play basketball, or dance for hours without rest. this increased endurance is best explained by _____.

Answer 1

It is explained by the growth of their hearts and lungs. It is because when their heart has the ability to pump naturally and their lungs are more expanded in a way when they are able to do these type of activities, it is likely that there endurance is increase, performing more better and not getting tired compared of other people.