Abs Pilates 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 PostsAnnouncing the Launch of Fitness by CatheJanuary 26, 2008Surprise! Hiit Training is Good for Your Liver TooOctober 3, 2015Does the Hormonal Response to Aerobic & Strength-Training Exercise Differ?May 26, 2019