What are the key differences between a spin bike and a trainer, and which one would be more suitable for my indoor cycling workouts?

A spin bike is a stationary bike designed for indoor cycling workouts, while a trainer is a device that turns your regular bike into a stationary one. Spin bikes are more suitable for intense, structured workouts, while trainers allow you to use your own bike for a more customized experience. Choose a spin bike if you want a dedicated indoor cycling setup, or a trainer if you prefer using your own bike indoors.