In a standing position, grab the EZ bar with your palms facing up and about 6 to 8 inches of space between them. The bar should be down and in front of you and your elbows tucked-in close to your body. This is your starting position.
Lift the bar up until your forearms are almost vertical. Then, lower the weight down to the starting position but don't fully extended your arms (you should always maintain tension in your biceps by keeping your arms slightly bent at the bottom of the movement). Finally, repeat entire movement for the desired or prescribed number of repetitions.
Perform this exercise in a smooth and fluid motion
Don't extended your arms completely on the downward portion of the movement
SPECIAL NOTES & LEVEL of DIFFICULTY VARIATIONS
To increase the level of difficulty, slow down the movement or load the EZ bar heavier.
This is a great exercise for building bicep muscles. The advantage of the EZ bar is that it's very comfortable to grip and it's low impact on your forearms. Thus, one of the main reasons people choose the EZ bar over the straight bar (barbell) is that it provides them with less of a strain on the forearm tendons and muscles.
One thing to keep in mind is that the weight of the bar will pull you forward, which means that you need to lean back just a touch to offset it.