While I would agree that drastically altering your diet or workout routine will definitely make it hard to tell if it's the supplement that is doing anything, a small increase isn't going to skew anything so much that it'll take away value from the log. As Jebrook stated, this is a log, not a scientific study. Furthermore, part of the benefit to K1ngslayer is the ability to increase appetite AND allow your body to take advantage of those calories. Assuming your goal is to gain mass, why limit the effect of the supplement by not allowing it to do one of the things it shines at? There's more than one KS log running...eat for your goal. If someone is reading hoping to hear about someone's experience with KS on maintenance or a cut, they can look for a log on that, or they can extrapolate from your log. Anyway, I'm assuming this wouldn't be the first time in your life that you've increased calories. I'm sure you can compare it to previous experiences. If you had to keep parameters exactly the same in order to evaluate a supplement, and you weren't able to just compare to previous experiences, no one would EVER be able to evaluate PCT supps, for example, since obviously there's going to be a big change in supplement protocol right before beginning those.