However, you have to remember to use only diet sugar and drink only diet soda. The three-day tuna plan stresses on drinking at least four glasses of water.

A Three-Day Diet Plan

A Three-day diet includes tuna as one of the main food types. A sample plan is given below.

Day #1

Breakfast

Black tea or coffee (use diet sugar) or water

Either juice or 1/3 grapefruit

1 slice toast (1/2 to 1 tbsp low-fat peanut butter as spread)

Lunch

1 slice plain toast

1/2 cup tuna

Water, diet soda or black tea or coffee (use diet sugar)

Dinner

2-3 oz. lean meat (fish/chicken)

1 cup green beans

1 cup grated carrot

1 medium apple

Water or black coffee or tea (diet sugar)

Day #2

Breakfast

Black tea or coffee (use diet sugar) or water

1 egg (omelet, hard-boiled or poached)

1 slice plain toast

1 banana

Lunch

1 cup tuna or cottage cheese

5 saltine crackers

Water, diet soda or black tea or coffee (use diet sugar)

Dinner

2 hot dogs or 2 beef franks

1 cup cabbage or broccoli

1/2 cup grated or sliced carrot

1/2 cup sugar-free vanilla ice cream

Water or black coffee or tea (use diet sugar)

Day #3

Breakfast

Black tea or coffee (use diet sugar) or water

5 saltine crackers

1 oz. cheddar cheese

1 apple

Lunch

1 hard-boiled egg

1 slice plain toast

Water, diet soda or black tea or coffee (use diet sugar)

Dinner

1 cup tuna

1 cup cauliflower

1 cup carrots

1 cup melon

1/2 cup sugar-free vanilla ice cream

Water or black coffee or tea (use diet sugar)

Keep in mind that you can have the 3-day tuna diet only once a week. Whether this diet-plan has helped you to reduce weight or not will depend on the diet you would take for next four days. If you feast on high calorie food the next four days after the 3-day diet, then you are likely to gain weight.