Core Work July 14, 2007 by Cathe Friedrich 4 Day Split – Kickbox Core work. Categories: 4-Day Split Series, Behind The Scenes, BlogTags: 4 day split, boot camp, cathe, core, exercise video, Higher Intensity Step, kickbox, Lower Intensity Step Leave a Comment Related PostsMeat and Dairy May Increase the Risk of Cancer by Boosting Levels of This AntibodyNovember 8, 20205 Facts About Sarcopenia You May Not Know – But ShouldMarch 6, 2022One Arm RowMarch 30, 2008