Health wearables gather and analyze fitness data through various sensors that track biometric metrics such as heart rate, steps, and sleep patterns. These devices often employ accelerometers, gyroscopes, and other sensors to collect real-time data about physical activity. The information is then processed using algorithms to provide insights into the user's health and fitness levels. Many wearables connect to mobile apps, enabling users to visualize trends and receive personalized feedback, which can help them achieve specific health goals and maintain overall wellness.