I only carb up every 2 weeks and my Monday workout after Carbup feels great. Last week I noticed I started fading 8 in outta my 10 rep sets. And this afternoon I was blowin out 10 with at least 10-15lbs more like nothin. Just grabbin the 45's I felt a difference. I'm sure a great deal of it is mental but I just felt pumped today, even more then when I carb up weekly