A health tracking system configured to provide activity, nutrition, health, and sleep data to a user. The health tracking system comprises a personal electronic device configured to receive health data obtained by a sensor device and/or manually input by the user and display personal metrics on a display screen. A subjective nutrition rating prompt is also provided to the user, which includes a plurality of simplified nutrition rating options, each of the simplified nutrition rating options providing a subjective nutrition consumption estimate. The personal electronic device is further configured to receive the simplified nutrition rating options input by the user and display nutrition estimate metrics on the display screen.
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