To answer the first question we will recruit and enroll Individuals who participate in the weight-loss challenge in a randomized behavioral intervention trial examining exposure to text messages and weight loss outcomes. Prior research has shown that making a change in behavior and weight loss can be dependent upon the type of messages provided to an individual (Rothman AJ, Salovey P, Antone C, et al, 1993; Patrick K, Raab F, Adams MA, 2009). We will test whether different content delivered via text messages impacts weight loss outcomes.