Tours of the Isagenix World Headquarters in Gilbert, Arizona are offered every Friday at 11:30AM. Tours are offered on a first-come, first-served basis. There is no need to make an appointment to join a tour. Parking is located on the north side of the building, just off Rivulon Boulevard. Please park in uncovered, unmarked spaces.
The biceps curl is an exercise for the elbow flexors, which comprise the biceps brachii, brachialis and brachioradialis. You can emphasize each of these muscles by using a variety of grips. It is best to do biceps curls using dumbbells to ensure the elbow flexors of each arm are being worked to the same extent. Also, when you use dumbbells, it is best you do the biceps curls unilaterally, meaning one side at a time. By doing so, you can focus on one side at a time and better stimulate the muscles.
The preacher curl places your arms in front of your body and allows you to work your biceps with a great degree of isolation. Isolating your biceps is of course useful to focus your mind in order to achieve a great contraction which will serve to build new muscle. The dumbbell curl performed on an incline bench offers similar advantages in that the angle of the arm is similar to that when performing a preacher curl.