kenny, i have found some new routines to help my lagging biceps. i'm supersetting more but in a different way. i'm using an inside/outside approach on 1 workout and hi/low approach on workout #2.
on back day i do light bi's using the inside/outside. first superset: first exercise is one i can hit the outside muscle (wide grip curl or hammers) second exercise is for the inside muscle ( narrow grip ezcurl or str bar or db curls from outside of my leg to center of my chest). 2nd superset is a reverse of the first, go inside first movement then outside for second movement. just pick diferent exercises. your rep range just be 10-12 per each exercise. then i finish with a concentration movement that hits both muscles. i have added some thickness to my bi's in just 2 weeks.
for workout #2 i'm going hi/low to hit the slow and
fast twitch muscle fibers. first exercise is heavy getting maybe 6 reps supersetted with another one simular (either outside or inside grip on both) getting at least 15 reps. this burns like hell. the second superset is like the first but change the grip. and finish with a concentration type curl.
from both workouts its 3 sets per superset and 3 sets of concentration curls.
i'm trying this for a while just to be different and because i've tried all the other routines over the years without must success.
btw i'm working my arms twice a week.