The increasing presence of social media in adolescents' lives has prompted considerable concern regarding its effects on their body image and fitness habits. This research investigates the connection between social media use and changes in body language and fitness behaviors among teenagers aged 15 to 17 in the Duliajan region of Assam. Data was collected through a structured questionnaire based on a 5-point Likert scale, with 40 participants randomly selected for the study. The primary objective is to examine how exposure to idealized representations on social media impacts adolescents' non-verbal communication, self-image, and engagement in fitness activities. Furthermore, the study evaluates the psychological impact of social media on teenagers' body image, self-esteem, and the potential development of unhealthy behaviors. These findings hold value for parents, educators, and policymakers by offering insights into the complex interaction between digital media and adolescent behavior, which can aid in promoting a healthier body image and balanced fitness routines. The research also provides a foundation for addressing increasing concerns related to body image anxiety among teenagers. By educating adolescents about the influence of social media, the study seeks to equip them with the knowledge needed to make informed decisions regarding their body image and fitness, fostering a healthier relationship with both themselves and the digital environment.