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 PostsCast Iron Egg & Veggie BakeMay 19, 2012Fitness Q & A: What Is a Muscle Imbalance?October 27, 2013Being Strong and Healthy is the New Way to BeSeptember 6, 2013
