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 PostsFitness By Cathe Ankle WeightsJanuary 25, 20083 Ways Gut Bacteria Affect Body WeightFebruary 28, 2016Tricep ExtensionsFebruary 18, 2008