What is die off ? ? zoe bess ??

I have been seeing that in many posts. Yesterday and so far today I have been wanting more syrup , feeling extremely famished not really focusing . I am not stopping the fast yet, today's day 11 I have alot of toxic stuff and fat to lose. I am in it for the long run. I just had a bowl movement (more than most days it resembled mud , does that mean its mucous )? Some days my b/m was mostly all liquid . Yesterday I had a rough emotional day sticking with mc. It was a low point , today is a little better . My b/m was warmer than usual . Wondering if it was because MY BODY was going through a big detox all day and finally released.
What do you think? Is it really safe to use senna tea for more than what it says on the box , I'm slightly worried about that. I plan on going 40 days . Any veterans out here please answer ? Tweet