Yes if you want coaching rather than a card-swipe gym — everything here is booked with a trainer, so message before you turn up.
gym · Sag Harbor
Post House
Strength-and-conditioning studio on Long Island Avenue, a block behind Sag Harbor's Main Street. Personal training and small group classes, booked rather than walk-in, with the same programming streamed on demand for members. No prices published on the studio side — email ahead.