i have completed it , but on the cross trainer/elliptical bike affair...
I did try it a couple of years back out on the roads, and really buggered my ankles, they belong on the 8 stone teen I was all those years ago, not the size 18 I was! Anyway, new trainers, and new determination not to be any fatter meant I started off the NY, doing it every day, but after about three weeks the ankles started again, so I cut it to the 3 days a week as recommended and finished it week before last....and no more ankle issues
I have lost weight, around the middle and certainly notice a vast improvement from really struggling to do the last runs in a session to being able to keep going at a pretty high lick for 28 minutes in week 9 The size 16 jeans I have now go up and down without being unfastened and have to be belted and I can wear the 14s all day without feeling suffocated, but they are a little neat to be absolutely honest. I do not weigh, but dd, dh and my nail lady have noticed!
I repeated a few runs just as I knew that although I had completed the week it had been a struggle and to move on would have meant more struggle, it's really easy to monitor speed/effort on the cross trainer though so very straightforward to know when you are doing better.
also had a dreadful coldafter week eight so took a week off and then two weeks to do the last three, but I managed a PB for distance and speed
The challenge now is to work up my speed and balance for the treadmill so I am pondering that when we are away next week and will make a plan of some sort!
It definitely works and I will continue with it until I am able to go outside like a real runner!