I did it for 6 weeks a couple of months ago. Here were my results. I screwed off a little the last week.
I works better than any other diet I've tried, but it's not easy. A good appetite suppressant is helpful on the 3 low cal days.
3/21 Start 0 187.0 lbs 13.50%BF 25.2fbm 161.8 lbm
3/28 Week1 186.5 lbs 12.90%BF 24.1fbm 162.4 lbm
4/04 Week2 184.5 lbs 12.56%BF 23.2fbm 161.3 lbm
4/11 Week3 183.0 lbs 11.96%BF 21.9fbm 161.1 lbm
4/18 Week4 181.0 lbs 10.74%BF 19.4fbm 161.6 lbm
4/25 Week5 179.0 lbs 09.65%BF 17.3fbm 161.7 lbm
5/02 Week6 180.0 lbs 08.87%BF 16.0fbm 164.0 lbm (FINAL UPDATE)
Here's my log if you want more info.
http://forums.1fast400.com/?showtopic=13043