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 PostsThe Surprising Ways Gut Bacteria Affect Your Body WeightJune 17, 2012The Latest on Vitamin D: Is Sunscreen Our Enemy?February 11, 20245 Things You Should Include in Your Fitness Training JournalAugust 12, 2018