What are the proper techniques for performing standing ez bar curls to maximize muscle engagement and prevent injury?

To perform standing EZ bar curls effectively and safely, start by standing with feet shoulder-width apart and holding the EZ bar with an underhand grip. Keep your elbows close to your body and curl the bar towards your chest while keeping your back straight. Lower the bar back down slowly and repeat for desired reps. To maximize muscle engagement, focus on controlled movements and avoid swinging the bar. It's important to use a weight that allows you to maintain proper form throughout the exercise to prevent injury.