10 day fast - How much can be accomplished?

I have been fasting for 40-45 hours weekly since April. I am now doing my first longer (for me, I know 10 days are still considered short) fast, aiming for 8-10 days. As far as healing, what can this length accomplish? I know serious conditions require long fasts, but based on everyone's experience, what can the body "get done" so to speak in up to 10 days? Also, how frequently should one fast for this length of time? When I'm done, I'll keep my weekly 40-45 hour regular fasts.

Thank you for any help. Tweet