when I did the Hulda Clark Flush, I ate a baked pototo as directed, just with salt. that was it for lunch, ending at 2pm. well, I was starving through out the day. Next time I do that flush I may eat heavier or later. I'm not sure. I was just starving, and wiped out by the next day because you do the 2 other Epsoms the next morning, than have to wait to eat/drink. I was wiped out but the flush works very well so I am pretty sure I will be doing this again in a few weeks.