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.
A knee curl is an exercise perfomed to strenghten the hamstrings on the back of the thigh. This can be performed from either an upright position with the ankle attached to a cable, or by using a piece of equipment designed for the hamstrings. If using a machine, it is important to ensure that it is set up properly.