Can I lose one stone in one week?

I was browsing the internet last night looking for weight loss fixes and came across James Duncan's diet.

The Rules

1. No alcoholic drinks.
2. Permitted drinks: Black coffee, tea, lemon/grapefruit juice without sugar.
3. No milk, butter or fats.
4. NO EATING BETWEEN MEALS
5. Abstain from all not included in diet. Eat what is shown or go without.
6. ONLY DIET FOR ONE WEEK IN THREE - TWO WEEKS OFF
7. No substitutes allowed. The basis of the diet is chemical, not the quantities.
8. Lunch and dinner may be swapped but only on the same day.
9. GUARANTEED TO LOSE ONE STONE IN ONE WEEK.

Having read through it, it seems tough, Day 1 especially, but I'm going to give it a go. Heck, if I can lose a stone by this time next week, it'll be worth it - surely?

Weigh in - 10/3/14 - 11 Stone 11lbs


Day 1

Breakfast

1 Slice of dry toast with a grilled tomato/ tinned tomatoes

Lunch

Fresh Fruit (Any amount)

Dinner

2 Hard boiled eggs with salad and grapefruit

Ok, so I have had my breakfast, it consisted of one slice of medium brown bread, toasted with a few cherry tomatoes (4) cut up and placed on top. I am on my third cup of black coffee... coffee without milk is not my favourite! I'm currently hungry and I'm dreading the fruit for dinner... 

I must add that I am not endorsing any diet/s that I put on this page. This is purely for my own purpose. If you do attempt to follow any diet/s on my blog, then please consult your doctor first. Crash dieting is not healthy and weight loss should be a steady process of healthy eating and a moderate exercise regime.