Powerhouse Gym 158 W. 27th Street Manhattan

New York lists 1,872 gyms here, and most give you a fast way to reach them. 1,717 of these listings carry a phone number and 1,592 link out to a website, so calling ahead or checking a site before you show up works for most of the list. Zip 10011 holds 43 gyms, the highest count on the page, with 10001 close behind at 35. Call two or three that fit your schedule, since hours, class types, and membership terms vary by location and aren't spelled out here.

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