on cardio exercise:
E: Mama, why doesn't dat man have his shirt on?
J: Well, Baby, some people don't like to wear a shirt when they run. It helps 'em stay cooler.
E: When I am a grown up sometimes I'm going to take my shirt off and exercise.
J: In general ladies leave their shirts on when they exercise. Just the boys run without shirts.
E: Nooooo! Just me! Only I am going to take my shirt off.
J: Someday you are going to make your husband very happy.
E: Who's my husband?
J: I don't know yet.
E: Well just think real hard.