Update: After running clen for a week, I am longing for thermorexin!!!
First of all, I am not breezing through my cardio anymore...I'm getting tired earlier on in the session. Also, seem to notice burning/tightness in my legs that wasn't there before. Secondly, I've cheated a nibble or two on my diet several times this week, whereas T-rex killed my appetite so well that I never cheated (except for the prescribed cheat meal) at all during the previous two weeks. On T-rex, I was falling asleep on time, but now with clen I am going to bed much later. I can't believe I have to use clen for another week before I can get back to T-rex...I like T-rex a lot more!