sory, i've had a quick search but to no avail.
i'm sure this has already been covered.
for each set i do on a specific workout, my reps look like this
set 1 - 10 reps relatively light weight.
set 2 - 8 reps lift heavier weight.
set 3 - 6 reps (or lift untill failure of very heavy weight)
after this i move on to another exercise targeting the same body part.
I just wanted to know if it is better to stat with the heavy weight and try for more reps or do it the way i'm doing.