Pulaski County, AR is in the central part of Arkansas in the west south central United States: Closest City to the Center of Pulaski County, AR: Cammack Village, Arkansas: Cities in Pulaski County, AR:
Positioning the Body for Arm Curls. Mike Harrington / Getty Images. The arm curl or biceps curl is a highly recognizable weight training exercise that utilizes dumbbells or barbells, or even kettlebells, to work the muscles of the upper arm, the biceps, and to a lesser extent, the lower brachialis and brachioradialis.
Dumbbell Hammer Curls is an auxilary arm exercise that primarily develops the bicep brachii (bicep) and forearm (Brachioradialis). The main difference between the hammer curl and a standard dumbell curl is that you keep your thumbs facing towards you with your wrist in locked position throughout the movement with no supination.