http://AskTheTrainer.com I was hesitant to put straight bar curls up. This is an effective biceps exercise which you should sparingly. People who perform straight bar curls more than once every couple weeks are more likely to develop wrist problems. Since dumbbells allow freedom of motion at your wrists they are a safer way to build your biceps. Since you cannot supinate with a barbell as you curl, dumbbells may be a better overall choice. When you perform barbell curls, make sure you do not flex your wrists to keep the tension on your biceps. Take a slightly wider than shoulder width grip and keep your elbows in at your sides while you perform biceps curls. Keep your core, glutes, and shoulders tight while you perform barbell curls. No rocking, you are not 'reverse power cleaning' Again, especially if you work a desk job with lots of computer use, you may want to refrain from using straight bar curls in your weight training program. Personal Trainer Michael Behnken, MS, NASM-CPT-PES, CSCS http://AskTheTrainer.com/exercise-information.html