Heavy front laterals for me can go as high as 90lb dbs for a set of 6. I'll start with 30's for 12-20, then 50's for 12, 70's for 8 and 80-90lb dbs for 6 like I already said.....one arm at a time. Side laterals will be the same kind thing, but the highest I'll typically go is 80lbs on a really strong day.....anymore than that and it's all swing, momentum and inevitable wrist pain.