Surprised...

So today I performed free weight barbell squats for the first time in a about 6 months...I was very surprised how easy it was to get right back to the weight I used last time. I am not big on sharing "how heavy" I lifted but I easily got 365 lbs for 6 reps WITHOUT a weight belt. I actually surprised myself with that number...I thought at least my back would not be able to handle that resistance because I hadn't placed that much weight on my back in such a long time. I am now in my "carb depletion" phase, I have been going for 2 days with very little carbohydrates and on the 3rd day I have a "refeed" in which I consume about 150-200 carbs in one meal and no other nutrient(protein or fats) with it. I have been struggling at work on the 2nd day to stay energized but other than that its not too bad. The premise behind this is to use up all muscle glycogen and keep protein levels high so that the body has no choice but to use fat as the source of energy.