Stefania Mafra is in the gym with her trainer Sydney Paige and today the pair will be working on Stefania's arms. Sydney instructs Stefania to lift the weights in front of her, guiding her through her reps. Sydney has a special plan for Stefania today to work her out even harder. As Stefania lifts her weights, Sydney gets her fingers under Stefania's armpits and tickles her. Stefania laughs but Sydney won't let her drop the weights as she gets tickled. The more exercises and reps Stefania does, the more she gets her armpits tickled. Stefania should prepare for her arms to be sore tomorrow.