Came across a simple bicep routine that doesn't take long and absolutely destroys my biceps. Came across this video of a man named Derek Weida who was demonstrating this routine. The routine is basically 3 different variants of a dumbbell curl (hammer curl, spartan curl and strict negative curls) 4 sets 12 reps each. Superset all 3 together and rest 60 seconds between sets. I use 45 lbs dumbells and complete the entire round without setting the dumbells down. This is what I have been kicking my bicep routine off with and it digs deep. Great pump. Most of you may want to use heavier weights but I found 45's are plenty for me.