One Legged Situps with Ball March 31, 2008 by Cathe Friedrich 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 PostsWhat Are the Most Nutrient-Dense Fruits and Vegetables? You Might Be SurprisedJune 7, 2015Low-Impact Workouts – Some people confuse “impact” with “intensity.”March 4, 2013Can a Daily Dose of Apple Cider Vinegar Help You Lose Body Fat?January 8, 2017