I know how much I am normally able to lift each exercise. So let's say 125 lbs shoulder press, I expect to be able to lift the weights 10 times the first set, 9

I know how much I am normally able to lift each exercise. So let's say 125 lbs shoulder press, I expect to be able to lift the weights 10 times the first set, 9 times the second, 8 the third set. If I can't lift the weights 10 times I failed early.