The main product of a spin class is cardiovascular fitness, achieved through high-intensity cycling workouts in a group setting. These classes typically utilize stationary bikes with adjustable resistance, allowing participants to simulate various terrains such as hills and flat roads. Alongside improving cardiovascular health, spin classes also enhance muscular endurance, particularly in the lower body, and burn significant calories. Classes are often led by an instructor who motivates participants with music and cycling techniques, creating a fun and engaging workout environment for people of varying fitness levels.