Wearable health trackers are devices that people can wear on their bodies to monitor various health metrics. These gadgets often come in the form of wristbands, smartwatches, or clips and can track activities like steps taken, heart rate, and sleep patterns. They help users gain insights into their physical activity and overall health. Many wearable health trackers connect to smartphones or computers, allowing users to view their data through apps. Some advanced models can also monitor additional metrics, such as blood oxygen levels and stress levels. Popular brands include Fitbit, Garmin, and Apple Watch.