A、Exercise can do us good. B、Exercise can do us harm. C、It is uncertain. D、All depends on how we make use of it. D男士认为运动对健康大有好处，

W: How long will the parcel take to get to New York?
M: One or two working days. There are daily flights at midday. And we collect the parcel from you at 10:15, then your parcel catches that flight and it’ll arrive within 24 hours.
Q: What is the woman’s inquiry concerned with?

M: As is known to all, exercise does bring a lot of benefits to our health. First, it can greatly strengthen our hearts, lungs, bones and muscles, thereby changing our whole health for the better.
W: But all the above you mentioned does not mean that we can turn a blind eye to the negative effects exercise brings about. Continual as well as excessive exercise can result in sudden death.
Q: What can we conclude from the conversation?