Bench:
Push from chest to half for 7
Push from half to locked for 7
7 full reps
Legs:
Squat from bottom to half 7
from half to locked 7
7 full reps
I like doing 21's with biceps, doing pull ups like that work great too as stated. I do really wide grip pull ups, 21's without stopping. Wide grip pull ups seem to be the easiest for me to do.