Social media and fitness influencers significantly affect health behaviors by shaping perceptions of fitness, body image, and wellness. Influencers often share personal fitness journeys, advice, and routines that can inspire followers to adopt healthier lifestyles. However, they can also promote unrealistic standards, leading to negative body image and unhealthy practices. The visibility of fitness trends and challenges on platforms can encourage positive motivation but may also contribute to stress and comparison. Ultimately, the impact of social media on health behaviors varies widely depending on the individual's perspective and the content consumed.