Best Arms Exercise: Barbell Curl | Men's Health

Best Arms Exercise: Barbell Curl | Men's Health: "Ever been told that barbell curl is an 'isolation' exercise that only works your biceps? Well, that's just plain wrong. 'The barbell curl is actually a phenomenal total-body exercise,' says Men's Health fitness adviser David Jack. Do it right, and you'll train your shoulders, upper back, and even your core."