A treadmill is a popular exercise machine that allows people to walk, jog, or run indoors. It consists of a moving belt that you can adjust to different speeds and inclines, making it suitable for various fitness levels. Many people use treadmills to stay active, especially when the weather outside is not ideal for outdoor exercise. Treadmills often come with features like heart rate monitors, calorie counters, and preset workout programs. They are commonly found in gyms and homes, making it easy for anyone to incorporate regular exercise into their routine. Using a treadmill can help improve cardiovascular health and overall fitness.