In this study, we could show that wearables are an interesting tool for young to middle-aged adults, even when individuals are not especially interested in these technical devices. There was high variability between single subjects in general usage time and in usage behavior over weeks. From week five on, the overall usage behavior was reduced significantly. External factors like temperature, sunshine or day of the week also affected usage behavior. The most prominent reason for (non-)use is the individual person user. We thank Actimonda health insurance (Aachen, Germany) and Original Bootcamp (OBC Europe, Cologne, Germany) for their support. This paper resulted from a coorperation with  Malte Jetzke from the Department for the Social Sciences of Sports and can be read here: https://www.mdpi.com/1660-4601/17/22/8532/htm