Yea I believe you are right about the toxins coming from deep tissues. It makes me pleased to believe that my lifestyle had been healthy enough to remain less-than-toxic since my last fast. I AM glad that my body has obviously found some serious toxins to part company with...I only wish that I did not have to work the next three days during the process. Either way, I'm dealing with the discomfort the only way I can (mind over matter) and will continue forward with this fast indefinitely.