In the market for cashmere? Kitchenware? Crystals? There’s a Black Friday (or Cyber Monday) deal for it. But one commodity we know we’ll use—and that rarely goes on sale—is a heart-pumping workout from some of NYC’s best studios. Whether you’re a cycling devotee or a yoga fiend, Black Friday discounts on in-person classes, virtual subscriptions and equipment make for a cardio-filled holiday season and beyond. Presenting the best Black Friday fitness deals in NYC.