TWEAK: exploring multicomponent and adaptive health interventions

Digital behavior change interventions have a pivotal role in reducing lifestyle related illness, absenteeism and healthcare costs. However, current tools do not fit every day work routine due to improper timing of intervening or a lack of personalization. This can lead to a loss of interest or motivation in users. A current challenge in the design of these interventions is to improve the fit to everyday work routine and adaptation to changing personal health differences of users. We present Tweak, a system that integrates tailored and context-aware health suggestions into the user’s existing work (Outlook) calendar. Based on two four-week field studies (N=21), we found that the integration into the work calendar was perceived as easy to use, and stimulated reflective behavior and curiosity. Furthermore, calendar data can provide rich information to inform the timing of intervention.