we're in exactly the same boat.

I was 70 lbs overweight when I started this and completely out of shape.

Now I'm almost 20 pounds down, and I'm feeling great about the fact that I can now run 3 5 min run/1 min walk cycles as opposed to getting through 6 1min walk/1min run cycles, which was a total struggle before the fast started. All in 18 days!