Looking at the diet at the onset - almost every food group is included. I was able to have steak, ham, veggies, eggs, yogurt, fish, fruit, chicken, cheese and bread/rolls. Broken down further - it is restrictive. Black coffee I skipped as I personally do not like (I prefer sugar and creamer - actually I prefer to make my coffee no longer taste like coffee), so coffee was skipped entirely.
Steak is expensive and having it (4) out of (7) days makes this diet a little cost restrictive.
Getting through most breakfasts/lunches was hard. By dinner I was beyond ready for anything. Being on vacation part of week did not help matters. For the most part I tried to stick to diet - but it was easy to go off. The diet did not hold my interest.
This was one diet I am happy to be done with. I might of been able to make it through the second week of the diet through sheer determination. Although - if I went back to normal eating - any weight lost would of been gained.
I highly doubt this diet would push your body to lose 20 pounds let alone change your metabolism to the point that it would prevent you from gaining weigh over the next three years. If stuck to for two weeks you might lose 5-10 pounds but as soon as you got back to normal eating that weight would quickly come back.
I would not do this diet again. Even without the vacation interruption - I do not feel I would of stayed on diet through entire week - I got bored with it.
*** DO NOT DO ANY DIET WITHOUT FIRST TALKING TO YOUR DOCTOR ***