System and method for guiding a user to improve general performance

A system for guiding a user to improve general performance, the general performance comprising an activity selected from sleep, physical action and cognitive action, the system comprising:

• a wearable device to measure at least two parameters associated with the user during an activity period, wherein the parameters are selected from action of the user, temperature of the user and heart rate of the user;
• and
• a computing device operatively coupled to the wearable device, wherein the computing device is operable to:
• determine a circadian rhythm of the user based on the measured parameters;
• classify the user into a chronotype class based on the determined circadian rhythm;
• determine a typical activity schedule for the user based on the measured parameters;
• determine an optimal time period in a typical day of the user for at least one of physical action and cognitive action, based on the user's chronotype class;
• receive information about an intended activity of the user;
• analyse whether the intended activity is within the optimal time period;
• and
• guide the user on carrying out the intended activity, taking into account whether the intended activity is within the optimal time period.