In this episode of The Step by POPSUGAR, presented by SOREL, celebrity stylist Kate Young sits down with Katrina Scott and Karena Dawn, who created the fitness app and community that is Tone It Up. They are personal trainers, best friends, and business partners who met at the gym over a decade ago, a time when they say "fitness was very mean.” With Tone It Up, they wanted to change the way women supported women when it comes to body image and fitness. Katrina and Karena open up about the personal pivots that led them down this path and their survival techniques for managing friendship and business, plus the number one move that yields the best body-sculpting results.