What this guy said. If you take it into account for your macros, it shouldn't hurt your ability to build muscle; however, 6 sugar sodas a day will dramatically impact your health, and probably faster than you would imagine. I'm talking teeth problems, kidney stones, digestive problems, possible insulin resistance from all the spikes and drops, and you don't want any part of that. I would taper off though because if you've been taking in that much for a long time, you might get headaches or become irritable of you suddenly stop caffeine and sugar.