You are right. I was responding to the thread title and misread the actual first post, where he asked where people who live in NYC train. I read the post, but missed that part, concentrating instead on the title, which says Training in NYC. Thanks for he correction, as that clears it up.

I agree about riding "relatively fast." But for me, interval training requires far more speed than I am comfortable with while taking into account jogger and cyclist error. People are making too big a deal out of me expressing an opinion about comfort level with interval training in areas where people, even in the early AM, are still often wearing buds. I was also very clear to say that I think its dangerous, making it an opinion, not an admonishment.