Activity monitors are devices designed to track and record various physical activities, helping users maintain a healthy lifestyle. These gadgets can measure steps taken, distance traveled, calories burned, and even monitor heart rate, providing valuable insights into daily activity levels. With the rise of fitness awareness, many people use activity monitors to set goals and stay motivated. They often sync with smartphones and apps, allowing users to analyze their performance over time. Popular brands include Fitbit and Garmin, which offer a range of features tailored to different fitness needs.