Curls on a Stability Ball. (Last Updated On: July 4, 2009) Cathe and Jai work their biceps on a stability ball using heavy dumbbells in Boot Camp. Post navigation Dumbbell Concentration Curls.Band Tricep Kickbacks Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.