Stim breaks! Mentions adrenals but doesn't really go into cortisol or adrenal fatigue. If you take your breaks (we all hate it) you'll be okay! Problem is just like calories, its all the little **** adds up. People drop pre workout, toss in some fat burner thought the day, have a soda or some crazy ass coffee here and there, that's where we get in trouble. If you wake up at 2 or 3 every morning with your heart racing its time for a month or two of just taking hemavol or high volume. You can still have a great workout stim free! (You'll have a really bad weekend of withdraw migraine )