Review Deborah Lupton. The Quantified Self. A sociology of Self-tracking. Cambridge, Polity, 2016, pp. 240

As Deborah Lupton argues in The Quantified Self, everyday practices and bodily functions have been monitored, measured and recorded since ancient times. These practices are now reconfigured trough self-tracking technologies, which are designed to be mobile, implantable and wearable, to collect and transform – automatically or not – the everyday elements of individual and urban life into graphics, statistics, and behavioral patterns. The sociological literature on self-tracking is recently beginning to emerge in a fragmented debate, given the complexity of this open-ended phenomenon. Indeed, several scholars have criticized self-tracking technologies for the further level of surveillance trough data (Kitchin and Dodge 2011). On the contrary, others underline the reflexive impact of data upon the users through a constant self-improvement and selfmanagement (Ruckenstein 2014), as well as the emergence of new ways of participatory democracy with the formation of citizen-science and citizensubjects (Gabrys 2014). The book outlines the discussions on selftracking practices from various sociocultural theoretical perspectives, using the concept of “self-tracking cultures” in order “to encapsulate the view […] that the practices, meanings, discourses and technologies associated with self-tracking are inherently and inevitably the product of broader social, cultural and political processes”.