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.
One group of variations involves postures that hold the elbows in front of the trunk, shortening the biceps and forcing the brachialis to do more work. Variations on this theme include: concentration curl where the elbow is braced against the inside of the knee. preacher curl where the elbows rest upon a sloped bench.