Virginie Behar's project investigates how healthy individuals — often referred to as the "worried well" — engage with health data for preventive purposes through everyday technologies such as Apple Health and Fitbit in Denmark, where welfare policies increasingly promote self-tracking as part of preventive health efforts.

Grounded in surveillance studies and informed by postphenomenology, the project employs qualitative methods, including repeated in-depth interviews, diary studies, and walkthrough analysis, to examine how these interactions with self-tracking technologies shape and are shaped by the worried well’s everyday behaviors, health perceptions and approach to wellbeing and health prevention.

As such, it aims to shed light on how human agency is mediated and unfolds within the possibilities and constraints of data-intensive (self-)surveillance practices.