The PEGASO system is based on the comprehensive Behavior Change Wheel (BCW) framework and in particular by the Capability-Opportunity-Motivation-Behavior (COM-B) system. This provided the theoretical grounding for the content and implementation approach of the behavior change interventions embedded within the components of the PEGASO system. The innovative key component of the PEGASO system is the behavior recognition system which allows detection and evaluation of participants' real-time behavior (collected through other components of the PEGASO system). While the target behaviors allow focusing the intervention on a specific task for each participant, the link between behavior change theory (Behavior Change wheel) and the target behaviors is ensured via the COM-B questionnaire. Participants will have the opportunity to choose one target behavior at the time. When selecting a novel target behavior, participants will be asked to complete the COM-B questionnaire. The answers for each question subset will guide which component of the COM-B behavior system adopt to target the content of the behavior change intervention. For instance, the messaging framework in the PEGASO Companion App will select messages that are associated with participants' preferences expressed in the COM-B questionnaire. This will provide an intervention that is personalized to the different needs of the individual intervention participant.