Watch the video below to see a demonstration of proper form and technique for the barbell preacher curl exercise. You can also check out some more biceps exercise videos or find exercises for other muscle groups.
To perform a set of barbell preacher curl:
Set the height of the preacher curl bench so that your elbows will rest comfortably on the pad and your shoulders remain in a neutral position. Hold a barbell with both hands, in a supinated grip spaced shoulder width apart. You should have your arms straight, feet on the ground and your trunk in a neutral position.
Bend your elbows to raise the bar under control to shoulder height. Remember to squeeze the bar tightly and breathe normally throughout the movement.
Pause at the top position for a 1sec count while maintaining full body tension and squeezing your biceps.
Lower the bar under control back to the arms straight position while continuing to breathe and squeeze the bar tightly.
Repeat steps 1 through 4 until you have completed the desired number of barbell preacher curl repetitions before resting.
This completes one set of barbell preacher curl.