Curves is a women-only fitness club built around a fast full-body workout on a circuit of hydraulic resistance machines, designed to be approachable for women of all ages and fitness levels in a supportive, non-intimidating environment. It's set apart by women-only membership, a short timed circuit combining strength, cardio, and stretching in one guided session, and purpose-built machines with no heavy free weights or complex setup — the emphasis is on community and encouragement, not competition.