Information provision method, information processing system, information terminal, and information processing method

An information processing system comprising:

• a server device;
• and
• an information terminal,
• wherein the server device configured to:
• acquire, via a network, biogas information at multiple timings and time information corresponding to time at each of the multiple timings, wherein the biogas information represents a concentration of benzyl alcohol of a user acquired by a sensor that detects the benzyl alcohol discharged from a skin surface of the user;
• obtain reference information representing an upper limit of a normal range of the concentration of benzyl alcohol per unit period of time, using a memory storing the reference information representing the upper limit of the normal range;
• determine a stress time period during which a concentration of the benzyl alcohol of the user is more than the upper limit of the normal range, based on the acquired biogas information;
• and
• output time period information indicating the determined stress time period to the information terminal, and
• wherein the information terminal displays the stress time period indicated by the time period information, on a display of the information terminal.

A method for processing information using a computer, the method comprising:

• acquiring, via a network, biogas information at multiple timings and time information corresponding to time at each of the multiple timings, wherein the biogas information represents a concentration of benzyl alcohol of a user acquired by a sensor that detects benzyl alcohol discharged from a skin surface of the user;
• obtaining reference information representing an upper limit of a normal range of the concentration of benzyl alcohol per unit period of time, using a memory storing the reference information representing the upper limit of the normal range;
• determining a stress time period during which a concentration of the benzyl alcohol of the user is more than the upper limit of the normal range, based on the acquired biogas information;
• and
• outputting notice information representing that stress on the user is more than the upper limit of a predetermined normal range within the determined stress time period to display the notice information on a display.