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 Posts5 Fitness-Friendly Nuts to Add to Your DietApril 16, 2012Is Athletic Talent Born or Made?April 17, 2016Stress Fractures: Are You at Risk for One?July 14, 2013
