What is the 3 Week Diet Plan?

There are several questions that are always in the center of people’s attention: Is there an easy way to lose weight fast? How to lose weight without exercise? Is there a healthy way to lose pounds? etc. People of every age (from teenagers to elderly people) show a huge interest in diet programs and systems, for different reasons: to get ready for the summer, for a wedding day or other important occasions, to be able to wear their favorite clothes and look more attractive, to combat or prevent different health issues, etc.

There’s a relatively new program that has caught my attention lately, regarding Superfast weight loss. It is called 3 Week Diet. In this article I’d like to answer two basic questions regarding this diet: ΄What is the 3 Week Diet Plan?’ and ΄What’s all that fuss about this diet?΄

WHAT IS THE 3 WEEK DIET PLAN?Blue Dumbbells, Measuring Tape and Fresh Fruit The 3 Week Diet Program is a manual-based system that is supposed to help consumers lose body weight and body fat in twenty-one days. The program consists of four instruction-based manuals, including the  Introduction Manual, Diet Manual, Workout Manual, and Mindset & Motivation Manual. Consumers can purchase the entire set, which is also available as a digital download.


The creator, Brian Flatt, is a certified personal trainer and sports nutritionist who has been in this industry since 1999. According to him, other weight loss programs or diet plans are more targeted towards a slow approach to weight loss and do not help the user in shedding stubborn stored fat.

The 3 Week Diet claims that the user will be able to accomplish the following in twenty-one days:

  • Lose 12-23 pounds of pure body fat

  • Lose 2-4 inches from the waistline

  • Drop 2-3 dress sizes

  • Decrease cellulite

  • Improve metabolism

  • Get healthy skin and hair, etc.

Woman standing on Weight ScaleAccording to The 3 Week Diet, your results will depend on your dedication and the amount of effort you put into the diet. And… If you want to lose even more weight you also have the option to continue the diet beyond the 21-days. This program is said to be very restrictive, and that will likely involve some experience of hunger and discomfort.

The 3 Week Diet Plan claims that this system has secrets and techniques used by celebrities, elite bodybuilders, and fitness gurus. However, there is not a single relevant source to justify or prove this claim.

It’s interesting to see what the author of the 3 Week Diet sais. “When I sat out to create this diet I wanted something that produced fast weight loss because quick results inspire a person to stick with the plan and I also wanted something that was so easy anyone could do it,” Flatt said. “All the incredible success stories that we are receiving is an indication to me that I accomplished my goals.”


While this is a “new” diet, it’s actually nothing more than taking different ideas from several existing diets, such as the Keto Diet, Intermittent fasting, and others, and reworking them into a 3-week plan.

The 3 Week Diet System consists of 4 books:

Diet Detox Books on Wooden Floor1. Instruction Manual book – Which focuses on science and techniques behind weight loss.

2. Diet Manual – this book provides a list of food to eat every day, the specific quantity of food to eat, and the timing to follow regarding the meals.

3. 3 Week Diet plan – The third book consists of a workout manual which has special small exercises and workout plans which can be done in a gym or at home.

4. Mindset & Motivational Manual – This book includes a lot of motivational tips, tricks, and secrets.

The diet is broken down into 4 phases over the 3 week period and promises following:

Phase 1 (Days 1-7)

This is the cleansing part of the diet, which helps to remove toxins, waste buildup and excess fat from the digestive system. During this phase, you get a detailed explanation of the type of foods you are permitted to eat.

Phase 2 (Day 8)

This is a one day phase, called “The 24 Hour Fast. In this phase, you’re supposed to eat your last meal (which is dinner for most people) and then you don’t eat again until dinner time the next day. In this phase, you’re going to skip 2 meals.

Phase 3 (Days 9 – 11)

Known as the “Fat Phase”, it is during this time that you eat an assigned number of calories, with about 80 percent being fat.

Phase 4 (Days 12-21)

During this phase, you gradually add more food to your diet plan. You will have a customized calorie plan to help you, based on your BMR (Basal Metabolic Rate – the rate at which your body uses energy when you are resting in order to keep vital functions going) and your weight loss goals.

The 3 Week Diet include exercise – In this 21-day period of time, you will do some simple exercises 30 minutes a day, 3 times a week.  These exercises require minimum equipment  – 2 dumbbells.

Read more regarding this Diet Pros & Cons and things you need to know in my Honest 3 Week Diet Review


Silver Dumbbell, Fresh Meat & Sliced Veggies

There are many affiliates that advertise this diet, calling it: “sensational”/ “the diet plan that did everything it promised”/ “everyone who tries it, even hardcore skeptics, say only the best about this diet”, etc. But… Is that really so?

If you have a look at Amazon.com Reviews – the majority, i.e. 65% / or 83%  of people who left comments for this Program, gave only 1star (out of 5). Note: this Diet Plan appears on Amazon on several spots, so, reviews vary…
There are various complains on the web, too.  Read a Complete 3 Week Diet Review….


We have some reservations about it because:

– It’s not backed by any actual science

  -There are customer complaints posted on the web.

 – We’re concerned about the unrealistic weight-loss claims

– This and similar “Superfast” weight-loss plans can be dangerous, too!

If you’d like to drop more weight, then we advise you to go with a diet plan that is backed by solid science. If you want to learn more about a Healthy Diet backed by scientific research, about losing weight without starving, Cal measuring and any Health Risk,  you can find All the info & tips that are completely Free (here)…

Healthy Mediterranean Foods on the Table

And… If you enjoyed my “What is the 3 Week Diet Plan” article, or have any questions / require further information, feel free to leave your comment below.

Other related articles:

– About Mediterranean Diet….

Mediterranean Diet Meal plan…. 

– Metabolic Cooking Plan…

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6 thoughts on “What is the 3 Week Diet Plan?”

    • Thank you for a comment Kay, but, what you missed is – that I don’t support this diet So, if you, no-matter my comments, like this diet, you can find more info on the official 3 Week Diet site or its affiliate blogs.
      Best regards

  1. Did you try the plan yourself? Seems like a pretty tough course. I’ve found it to be much easier to loose weight just eating healthy. But I understand a lot of people don’t really know what that means. This diet plan seems to be putting together a lot of the top diets going on right now. I see a few similarity from the Keyto standard but I’ve not needed to try these diets thankfully. Fruits Veggies and proteins is my motto and not the one’s form McDonalds.. hehe .

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