A portable electronic apparatus includes an input section that receives an input of an operation from a user, a sensor that performs detection related to physical activity of the user, a display section that displays data by using an output from the sensor, and a processing section that maintains a display object item of data displayed on the display section to be a predetermined item and changes a display object period of the data displayed on the display section to a period (differing period) whose length is different from a length of a predetermined period in a case where the input section receives an input of a first operation when the data in the predetermined period regarding the predetermined item is displayed on the display section.
