4 Day Diet
Background
The 4 Day Diet was written by Dr. Ian Smith who is also the author of the Fat Smash and Extreme Fat Smash diets.
Smith claims that this program will help dieters to avoid the common pitfalls of dieting including boredom, not allowing treats, too much repetition, and plateaus.
4 Day Diet Basics
The 4 Day Diet is not simply a diet that lasts for four days but rather it consists of seven separate dieting modules that last for four days each. Smith claims that it is much easier for you to focus on what you are eating for the next four days rather than what you will and will not be eating for several weeks.
Another purpose of the different modules is that of increasing variety in the meal plan so you don’t get bored eating the same foods all the time. In addition it has the benefit of keeping the metabolism working well because the body is kept guessing and it doesn’t have time to adapt to the diet.
The seven dieting modules include:
- Induction (detox/cleansing)
- Transition (to reintroduce all food groups)
- Protein Stretch (to avoid plateaus)
- Smooth (when you can have some formerly forbidden foods like pizza and French fries)
- Push (the sprint just before the final stretch, back to a stricter eating plan)
- Pace (a comfortable module for you to catch your breath)
- Vigorous (the final module to lose those last few pounds)
Dieters can follow the diet plan through the seven phases for a one month program but it is also possible to create a customized program where you start with the first two phases and then do the other five in which ever order you like.
Smith places a great deal of emphasis on the psychological factors that are essential for successful dieting and says that losing weight is 80% mental and 20% physical. Dieters are provided with instructions on how to use tools like goal setting and visualization as well as with practical strategies for avoiding temptation.
Recommended Foods
Fruit, vegetables, low fat dairy, lean protein, whole grains, legumes, nuts, avocado, low calorie salad dressing.
Sample Diet Plan
The meal plans vary dramatically throughout the different segments. The following is a sample daily food list for the ‘Induction’ phase.
| 2 cups coffee. Limit sugar to one packet and cream or milk to one teaspoon per cup. |
| 2 cups of raw or cooked green leafy vegetables. |
| 1 cup freshly squeezed lemonade with no more than a tablespoon of sugar. |
| 1 tablespoon psyillium husk. |
| 4 servings of fruit. |
| 6 oz plain fat free yogurt. |
| 2 cups green garden salad with 3 tablespoons fat free dressing. |
| 1 cup cooked beans (chickpeas, lentils etc.) |
| 1 ½ cups cooked brown rice |
| Unlimited plain water |
Exercise Recommendations
Each diet module comes with specific recommendations for exercise. Dieters are advised to build up slowly in accordance with their fitness levels and if necessary to break up exercise into several short periods over the day.
Costs and Expenses
The 4 Day Diet retails at $24.95.
Pros
- Unique and interesting approach to dieting.
- Good for dieters that get bored easily or don’t like to follow a strict diet plan.
- Addresses the psychological factors involved in weight management and dieting.
- Can be customized according to the dieter’s preferences.
- Highlights the importance of goal setting.
- Allows for controlled cheating, which may increase adherence to the diet over the long term.
- Does not require any special foods or supplements.
- Suitable for vegetarians.
- The author has a very motivating writing style.
- Includes recipes.
Cons
- Does not account for individual variations in calorie and nutritional requirements.
- The meal plan lists all the foods to be eaten in the day and does not break it down into individual meals.
- Will not appeal to dieters that prefer to follow a routine with their meal plans.
Conclusions
Smith has provided dieters with a unique approach that may help to keep up interest and enthusiasm that will enhance the chance of successful weight loss. The ability to customize the diet as well as the differences between the diet segments will make this diet appealing to those who prefer variety or have difficulty sticking with standard diet plans.


I just started the whole process today, the detox phase. I’m full now but have a feeling I will be hungry tonight, I’ll see how it goes. I’m excited to see how much wieght I lose, I have been drinking LOTS of water.
1st day- 5lbs gone, can hardly wait to weigh in tomorrow morning.
Try this diet
my husband and I are on the smooth phase now. He’s lost 12 lbs in 1.5 weeks, i lost 8 in 1.5 weeks. This meal plan does not take into consideration calorie requirements so my poor husband struggles with hunger but i’ve been doing fine. I don’t even eat all the daily food recommendations. This seems to by more of a meal plan to re-introduce you to caveman eating. Its healthy, low-fat foods. We’re suppose to have more energy on these foods but there is no way i have anymore energy…by far the detox (first 4 days) were the hardest days on this diet but you DO lose quite a bit of weight on this! This does work if you stick to the food regime and exercise.
do you following the diet for 4 striaght days or every other day to equal 4 days and what can i eat the other 3 days of the week?
I would really like to get the book but i’m in South Africa, is it possible to get it here?
just finished all the modules and i’m about to start them over – do you start from the induction module again? or do you skip induction and transition and go into the protein stretch?
it’s my third day and i’m down two dress sizes i didn’t actually think it would work but it soo does.
i recommend this diet to everyone!
I looked over the meal plans and they don’t vary as much as they claim. Mostly a vegetarian plan. Tiny potions of lean meat or fish once a day after induction. Some low fat dairy allowed. Lots of veggies, fruit, and exercise. It allows some carbs like brown rice and beans or lentils.
hi!!! im yuni im from korea.. now i want to diet but its to hard to me… now my weight is 60kg and my height is 150cm.,my age is 14 and can you pls. give me a diet plans like what will i eat for a day…
What do you mean, taking? Basically, you r following the plan as outlined in the book. 3 servings of fruit, large/med salad, 2 cups of cooked or raw green leafy vegetables, like greens, spinach, lettuce, etc., beans on day 1 & 3 and lots of water. For fruit, I chose strawberries, red grapefruit, apples and pears.
girls can u help me wid the first module
i mean what are u taking on first 4 days ?
Today is my 4th day on the diet and i’m down 5 pounds. I’ve not been hungry at all. I eat about every 2-3 hours. What I find that staves off hunger is to cut your fruit up in bite size pieces so that when you can eat them gradually.
I’m on day 3 and I’m starving. I don’t know why because days 1 and 2 were great. I lost 5 pounds the first day! Any tips on how to stave off the hunger?