The Ez-Barbell Standing Wide Grip Biceps Curl is an exercise targeting the biceps muscles. To perform this exercise, you will need an. EZBarbell and a weight bench. Start by sitting on the weight bench with your feet flat on the floor and your knees slightly bent. Hold the. EZBarbell with an overhand grip, with your hands wider than shoulder-width apart. With your arms extended in front of you, curl the bar up towards your shoulders, then slowly lower it back down. Repeat this movement for 10-12 repetitions.