Disclosed are techniques including accessing historical physiological data of a person; presenting a graph view of a historical time period, where the graph view includes at least a portion of the historical physiological data plotted over the historical time period and includes one or more historical events which occurred during the historical time period; receiving user input indicative of a marker for an event, of the one or more historical events, being adjusted from a first position in the historical time period to a second position in the historical time period; responsive to receiving the user input, accessing adjusted physiological data for the person from at least the time point in the historical time period to an end of the historical time period, where the adjusted physiological data has been determined based on the adjusted marker for the event marker and a physiological model for the person; and presenting the adjusted physiological data.