Two Ab Workouts July 15, 2007 by Cathe Friedrich The 4 day Split series contains two Core routines, but the Ab workout on Kickbox seemed to be everyone’s favorite. Categories: 4-Day Split Series, Behind The Scenes, BlogTags: 4 day split, ab workout, boot camp, cathe, Higher Intensity Step, kickbox, Lower Intensity Step, workout dvd Leave a Comment Related Posts5 Types of Diseases Exercise PreventsJanuary 1, 2012Cathe and Lorraine in Athletic TrainingJuly 12, 2011Does Vitamin C Mimic Some of the Effects of Exercise?February 21, 2016