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 PostsIs the New Acceptance of Being Overweight or Obese Unhealthy?July 19, 2015Exercise, Inflammation and Your Immune SystemAugust 10, 2014The 2007 Road Trip Attendees!August 14, 2007