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.
  The biceps are a grouping of muscle fibers that expand and contract one way. When you do a bicep curl, the muscles are lengthened under tension. There are thee phases to â¦ the curl.The first phase is a slow lowering (eccentric-lengthening) of the weight down to a parallel positioning with the ground.This should be a controlled 3-5 second movement. The Proper Way to do a Bicep Curl Bicep curls are one of the first exercises taken on by individuals interested in weight training. 2  Also known as strength training, this type of exercise focuses entirely on mâ¦.