Cathe, Lorraine and Robert March 31, 2008 by Cathe Friedrich Cathe, Lorraine and Robert doing a One Legged Sit-up with Ball during STS Ab Circuits. Categories: Ab Circuits, Behind The Scenes, Blog, STSTags: Ab Circuits, cathe, exercise dvd, fitness dvd, One Legged Sit-up with Ball, STS, workout dvd Leave a Comment Related PostsEffective Glute Activation: Do You Have Lazy Glutes?September 18, 2016Cathe October 2022 Workout RotationSeptember 30, 2022Secret Salt: Foods That You Didn’t Know Were Laced With SodiumAugust 26, 2012