Limitations
anxiety
Our study has a few important limitations. First, this study does not provide any conclusion to the participants’ motivation for attribution and continuation, as the research incentives were financial rewards. We acknowledge that motivation and participation are crucial factors that affect the outcomes of internet-based interventions. Nevertheless, as the incentive was merely for participation in the study and not based on any accomplishment or goals, the effect did not directly interfere with the outcome. Second, the study did not include a control group owing to the limited number of participants. We do not know whether monitoring with a consumer-targeted health tracker alone would improve the sleep-related outcomes. However, research implies that although sleep tracking devices can help users better understand and improve their overall sleep habits, excessive focus on sleep feedback provided by only the tracking devices may derail users from focusing on modifiable behaviors and sleep hygiene or may exacerbate anxiety about sleep [