Embodiments are disclosed to automatically reset tracked physical performance information determined based on motion data generated using a sensor configured to measure motion of a user wearing a fitness monitoring device by calculating, utilizing the motion data, a reset time when a period of inactivity within each of a plurality of consecutive sampling periods exceeds a threshold time period. The fitness monitoring device may determine, utilizing the motion data stored over an extended period of time, an approximated midnight time and adjust the reset time to equal the approximated midnight time. The fitness monitoring device may generate motion data to track a number of steps achieved towards a goal, which may represent a threshold number of steps to be taken over a period of time. Embodiments also include utilizing other sensor data, such as light intensity data, to determine when a user is likely asleep.
