  In today's fast-paced world, stress has become a growing health concern.
While more automatic stress tracking technologies have recently become
available on wearable or mobile devices, there is still a limited understanding
of how they are actually used in everyday life. This paper presents an
empirical study of automatic stress-tracking technologies in use in China,
based on semi-structured interviews with 17 users. The study highlights three
challenges of stress-tracking data engagement that prevent effective technology
usage: the lack of immediate awareness, the lack of pre-required knowledge, and
the lack of corresponding communal support. Drawing on the stress-tracking
practices uncovered in the study, we bring these issues to the fore, and unpack
assumptions embedded in related works on self-tracking and how data engagement
is approached. We end by calling for a reconsideration of data engagement as
part of self-tracking practices with technologies rather than simply looking at
the user interface.
