A stationary bike is similar to a spin bike, but they are more common. These bikes simulate riding a real bike with different gears. Most bikes allow you to select different cardio workouts and difficulty levels. They usually come with monitors in the handles that can track your approximate heart rate. Most public gyms have numerous stationary bikes because they are a popular tool for cardiovascular exercise.
Physical therapy clinics use stationary bikes to warm-up patience before exercising or being stretched. They are also a popular tool among strength and conditioning coaches.