I did go through a couple of pretty bad healing crisis, but nothing I wouldn't go through again. It almost seemed the the further I got into the cleanse the more euphoric I got. I was a smoker for 15 years so as my lungs started to clear, it was a great relief to me. That on top of dropping weight at the same time seemed to be increasing my energy even though I was on a water fast. I love the way I feel when I'm fasting (bar the healing crisis). Sure I still got cravings, but I never had a problem with hunger. I had a pretty sedentary job at the time, so that also helped. The second 40 day fast (juice fast) was just something I felt I needed to do. I don't know why, but I didn't question it I just did it. I did actually lose a few more Lbs during that time but put it back on with refeeding. I believe it was just alimentary canal stuff! :)
I've read through some of your posts and you've come a long way yourself! I have no doubt you could do a long fast. Cheers!