http://AskTheTrainer.com/best-arms-exercise.html
Personal Trainer Michael Behnken, MS, NASM-CPT-PES, CSCS
Dumbbell Supinating biceps curls are a staple biceps exercise.
Supinate your hands when your arms are at 90 degrees and fully supinate at the top of the motion with your elbows at your sides.
No rocking or swinging your hips and lower back. Put your ego aside and use your brain to get the best benefits of biceps curls.
http://AskTheTrainer.com/best-arms-exercise.html
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