Increasingly, persuasive technologies are used to convince, stimulate and motivate users to engage in healthy behaviours. Currently persuasive technologies are based either on social psychology theories (the user compare s him/herself with other people ), se lf-determination ( human behaviour is a result of a decision that was either taken autonomously or that was rather imposed to a person ), goal -setting (process by which people attempt to constrain unwanted urges by gaining control over the impulsive response), or health belief model (individual’s perception of the severity, benefit, barrier of a situation or action to perform). However few approaches have tried to integrate user’s emotion. In this paper we present a persuasive e -coaching framework which explicitly consider and integrate the emotion in the decision making process. Toward the objective to deploy such solution, the first critical step is to identify a sensor configuration that is accurate enough and minimally invasive. We present the results obtained with only one physiological sensor.