Hello, this might be a dumb question, but bear with me. Am I suppose to be using different weights for different exercise ? For example I'm using dumbbells only to do 3 compound exercises per workout session, 3 days per week. The exercise are Chest Press / Back Row / Shoulder Press, and for the longest time, I've been using the same weight for ALL 3 exercise, when I increase the weights as I go, I increase for all 3 exercise as well, I assume that is wrong ? I should be using the appropriate weight for each exercise and also increase the weight individually based on the exercise as well ?