New research from Flinders University in Australia finds that TikTok “fitspiration” videos increased women’s tendency to compare their appearance with others, resulting in a negative mood. Unexpectedly viewing TikTok videos aimed at inspiring concern about personal fitness did not increase body dissatisfaction. Prior research on Instagram and its fitspiration content had found that body dissatisfaction increased after viewing. “Fitspiration” is marketed as a healthier version of “thinspiration,” a social marketing campaign that was intended to provide people looking to lose or maintain a low w…