Upright bikes are a type of indoor exercise equipment that simulates the experience of riding a bike outdoors. They are designed to provide a low-impact cardiovascular workout that can help you burn calories, improve your cardiovascular health, and tone your muscles. Unlike other cardio machines, upright bikes work on your lower body, including your legs, glutes, and core. Upright bikes are a popular choice for home gyms, fitness studios, and commercial gyms due to their versatility and ease of use.