Exercise for good health

Today when I was enjoying my nap in my bedroom, a strange number of phone call came in.It's from my fitness club. The man over the phone said they wanted to make a whole medical checkup for me. And it's free.So I accepted it. After several events of the checkup, The instructor told me according to my body quality I should do more anaerobic exercises through the equipment in the club. And because I was a new member of their club,they will guide me one for one to use the instrument well in the next couple of months. Of course the conduct won't be free. He give me a lot of reasons for me to do it.But I told him the charge of the conduct is too expensive for me.And I don't want to this kind of trainings.after that I could feel he was a bit unhappy. Maybe he is right. For a better figure and stronger muscle of my body I should do more anaerobic exercises,.but I don't like it. It's boring to me.I like the aerobics and I just enjoy it. So I won't have to do the excise which I don't like.