Disclosed is a method for defining a balance between physical activity and rest for a user. The method comprises collecting sensor data indicative of a measure of activity performed and rest taken by the user as a function of time analyzing the sensor data to distinguish sedentary stages from stages of activity or rest assigning a level to a given stage of activity or rest evaluating a plurality of activity-rest parameters for the user and calculating an activity-rest score from the plurality of activity-rest parameters, so as to provide a feedback indicating a status of the balance between the physical activity and the rest.
