Say the day before, you worked on Biceps and today the're very sore. Now, with all the microtears being repaired, if you were to do Biceps today wouldn't it be easier to cause the microtears to become "larger" covering more area resulting in an eventually bigger bicep?
I know there is a definite something wrong to doing this, I've never worked a sore body part and don't plan to, but what would happen.