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 PostsLast Chance to Pre-Order Cathe’s 8 New Videos!September 1, 2013Does the Texture of a Food Influence How Much You Eat?July 10, 2016How to Work Your Core While Standing and Why You ShouldJune 7, 2020