Short on time bicep workout

Are you running short on time and want to hit an arm workout? I know you are thinking that 15 minutes is not enough time. Well you are wrong. You can get a killer workout in just 15 min or less.
This series will go over how to get a great workout in in just 15 min or less for all body parts so keep checking back.
Today you will lean how to get some huge 21 inch arms in a very short time. You will have a killer pump going when you finish this biceps workout. I bet you put at least 2 inches on your arms during this epic 21 inch arm workout.