My personal experience has been that when I get the Herx, I feel malaise and somewhat Nauseous. I stop the program, and within less then an hour I am fine. From everything I have read, we need to pay close attention to how we FEEL....while running any program. Some I can blast and others but not so much. IE, kidney bladder ones I have to go easier on. Its all a personal feeling. I did run the Terrain, and did have some days that were not great. As time progressed I figured out what I could do and what I shouldn't do.
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