Summer is coming and that means short sleeves and our arms will be on show .....if we get a good summer . Fingers crossed. Arms are very small muscle group, but are what most people comment on if there well developed. For many aspiring bodybuilders, big arms are a top priority when it comes to training goals. However, many people are overly dependent on a very limited number of bicep exercises, specifically barbell and dumbbell curls. While these exercises are great, if you w