Smartphones can track a variety of fitness metrics, including steps, without the need for wearable devices. Many individuals may automatically think of smartwatches or fitness trackers when considering monitoring their activity levels, but built-in smartphone capabilities and third-party applications offer alternative solutions for tracking health data.

Smartphones have the capacity to automatically track the number of steps taken, providing users with insights into their daily activity levels, according to experts in digital health. As long as the phone is carried throughout the day, it can record step counts without requiring additional devices. For example, iPhone users can access the Health app to view logged data, including step counts.

While smartphones offer built-in features for tracking steps, monitoring other health metrics like diet and sleep often requires third-party applications. Numerous apps are available to help users set and achieve health and wellness goals without purchasing a separate fitness tracker. These apps leverage the phone's sensors and user input to provide comprehensive health insights.

Dr. Emily Carter, a physician specializing in preventative medicine, noted that while wearables offer advantages such as continuous heart rate monitoring and convenience during activities like jogging, it's important to recognize the capabilities of smartphones. "Smartphones can be a valuable tool for individuals looking to monitor their activity levels and make informed decisions about their health," Dr. Carter said. "Before investing in a smartwatch or fitness tracker, it's worth exploring what your phone can do on its own."

The use of smartphones for fitness tracking has practical implications for public health. By making it easier for individuals to monitor their activity levels, smartphones can encourage healthier behaviors and contribute to the prevention of chronic diseases. However, it's important to note that the accuracy of smartphone-based tracking may vary depending on the device and app used.

Researchers at the National Institutes of Health are currently conducting studies to evaluate the accuracy and effectiveness of smartphone-based fitness tracking. These studies aim to provide evidence-based recommendations for individuals and healthcare professionals on the use of smartphones for health monitoring. The findings are expected to be released in the coming months.