Objective: Determine the efficacy and the effectiveness of a mobile health (m-Health) intervention app on specific lifestyle behaviors. Target Audience: College students from Texas A&M University, aged 18–30 years old. Theory, Prior Research, Rationale: The Capability, Opportunity, Motivation, Behavior (COM-B) framework hypothesizes that an interaction between three components (capability, opportunity, and motivation) influence behavior and can provide explanations for why a recommended behavior is not undertaken. In this trial, education, training, and modeling will be used to address the psychological capabilities and reflective motivation of the students, in order to increase walking behavior and improve specific life style behaviors. Description: MyFitnessPal (MFP) is one of the most popular publicly available apps for weight loss used. MFP incorporates elements of social cognitive theory, including self-monitoring, goal setting, and feedback. Using the Pacer Pedometer app, the intervention group receives physical activity goals (10,000 step/day). The researcher will encourage this group to use the app to monitor their steps and obtain feedback. The intervention group will be given a primary goal of achieving the SSBs recommendation of (<=240 mL SSBs/d (<=8 floz SSB/d)). The researcher will encourage this group to use the app to monitor their SSBs intake and obtain feedback. Evaluation: Feedback and tracking of step counts and calories expended and daily caloric intake/ fluid ounces of SSB consumption will be assessed across the 4 time points. Weight status and body fat percentage will be obtained at the end of a 12-week of intervention. Self-efficacy will be assessed using (McAuley, Lox, & Duncan, 1993) self- efficacy scale. Conclusions and Implications: Mobile-health tracking apps have a potential effect on preventative health care measures including increased physical activity, improvement in dietary self-monitoring, and beneficial dietary behavioral change. Applying health behavior change strategies (e.g. goal setting, self-monitoring, and performance feedback) will enhance health behavior changes across different population and setting. Funding: None.