I've been 5:2'ing since the 7th Jan and took measurements before I started. I've resisted the temptation to weigh myself but that eventually got the better of me
My start weight was almost 13 stone, last weigh in I was approx 12 1/4 stone which was mid week although I have noticed it does vary from just over 12 stone to 12 and a 1/2 which I admit does make me feel deflated. Around half way through I used the weigh in machine in Boots as it does BMI as well, on their machine I was 13 stone and I used it again and had lost 2 pound in just over 2 weeks, although my scales are more friendly I am happy with that. Not sure what my BMI is now as I've misplaced the printout although I still have one to compare to.
The other day I saw a T shirt in Primark I loved but they didn't have my size so I tried on the largest they had and it fitted a size 16 down from a 18/20/22.
I am very happy with how the 5:2 lifestyle is going and although my weight fluctuates I've noticed my stomach, whilst not washboard flat, its a lot less sticky out and my chest sticks out, as it should, more than my belly I've also noticed that chest area has also reduced.
I've almost done a month on 5:2 and its got generally easier, however I'm experimenting since being back at uni doing 12 hour days, whereas I used to be able to save most of my 500 for evening meal I find I need something at lunch to see me through.