High-end gyms, many of which used to be an amenity, are now the star attraction, offering hotel rooms and workspaces as part of their appeal. They’ve also gotten a lot bigger. Health Clubs, Exercise, Real Estate (Commercial), Chelsea Piers, Equinox Holdings Inc, Manhattan (NYC), New York City, Luxury Goods and Services High-end gyms, many of which used to be an amenity, are now the star attraction, offering hotel rooms and workspaces as part of their appeal. They’ve also gotten a lot bigger. NYT > Business