British-born cover model, Rob Riches, explains the difference dumbbell and barbell curls work the biceps differently. Subscribe to my channel and stay up to date with my latest videos: http://bit.ly/1kdM8RA Download my Ebook (UltraLean) for $24.99 here: http://www.robrichesshop.com/ultraleanebook See my full diet and training routines here: http://www.robrichesfitness.com/simply-shredded-interview/ Watch more of my video playlists: Youtube Fitness Collaborations: https://www.youtube.com/playlist?list=PLpBQy2MBM7U_pc_kknP2o4PTpZ60312S5 Muscle Group Workouts: https://www.youtube.com/playlist?list=PL149516BC78A5DD5A Food & Nutrition: https://www.youtube.com/playlist?list=PL40E41A8B92A916EF ✖ Follow Rob on Social Media ⍟ Facebook: https://www.facebook.com/RobRichesFitness ⍟ Instagram: http://instagram.com/robrichesfitness ⍟ Twitter: https://twitter.com/RobRiches ⍟ Training Site: https://www.robrichesfitness.com ⍟ Online Shop: https://http://www.robrichesshop.com/ ⍟ Snapchat: Search ‘RobRiches’ ⍟ LinkedIn: https://www.linkedin.com/in/robrichesfitness Rob Riches is a UK-born fitness cover model, athlete and competitor, making videos to help inspire, motivate and educate those looking to build a fitter, stronger & healthier body. He is a published author with a book about macro-nutrition (called Ultra Lean), and regular writes columns for Muscle & Fitness.