Group Shot of Concentration Curls July 13, 2007 by Cathe Friedrich A group shot of concentration curls in Boot camp. Categories: 4-Day Split Series, Behind The Scenes, BlogTags: 4 day split, boot camp, cathe, fitness dvds, Higher Intensity Step, kickbox, Lower Intensity Step Leave a Comment Related PostsWhen is the Best Time of Day to Strength Train?April 2, 2017Marinated SalmonAugust 18, 2013DVD and Download – Working Out on VacationAugust 22, 2010