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.
Curl is simply the circulation per unit area, circulation density, or rate of rotation (amount of twisting at a single point). Imagine shrinking your whirlpool down smaller and smaller while keeping the force the same: you'll have a lot of power in a small area, so will have a large curl.