Dumbbell Concentration Curls. July 13, 2007 by Cathe Friedrich Cathe, Brenda and Lorraine working their biceps in Boot Camp by doing dumbbell concentration curls. Categories: 4-Day Split Series, Behind The Scenes, BlogTags: 4 day split, boot camp, cathe, dumbbell concentration curls, fitness dvds, Higher Intensity Step, kickbox, Lower Intensity Step Leave a Comment Related PostsProud of me after 40 by RoxanneJune 19, 2011Exercise and HDL: How Much Exercise Do You Need to Do to Raise Your Levels?April 8, 2012How Magnesium Can Impact Your Exercise PerformanceJuly 4, 2016
