Single leg V-Sit March 30, 2008 by Cathe Friedrich Cathe doing a V-Sit during STS Ab Circuits. Categories: Ab Circuits, Behind The Scenes, Blog, STSTags: Ab Circuits, cathe, exercise dvd, fitness dvd, STS, V-Sit, workout dvd Leave a Comment Related PostsLorraine Doing Incline Chest FlysFebruary 3, 2008Glassboro Road Trip 2013- Thanks for ComingJuly 30, 2013Can You Speed Up Your Metabolism Through Lifestyle?May 10, 2015