Gill: When are you going to do your first marathon?
Tracey: No idea, but it's high time to start thinking about it
Tracey: If I wanted to run in the marathon, I'd have to train a lot
Gill: A friend of mine ran in the marathon without a proper preparation and he fainted during the run. 
Gill: You need to be extra careful
Tracey: There are instances like that and they happen very often
Gill: But in my opinion it's all worth trying
Tracey: Agree
Tracey wants to run a marathon but she needs a proper preparation first.