This 3 Week Diet review is for those who want to lose weight quickly. I mean really quickly.

Do you have to attend a special event next month? Are you getting married and want to lose a few pounds in a couple weeks?

There are times when losing weight is your top most priority in life but … it just doesn’t work. I can understand.

I have been to this very phase when I was struggling to lose weight until I found 3 Week Diet plan.

You can lose up to 23 pounds with 3 week diet.

Is it really possible to lose up to 23 pounds in 21 days?

This is what the 3 Week Diet plan by Brian Flatt claims. In this detailed review, I will share facts, videos, insights, and Free INTRODUCTION MANUAL of the 3 Week Diet system PDF.

Unlike other reviews, I will not talk too much about the diet plan and what it is since you can read all this on the official 3 Week Diet weight loss plan website.


What is 3 Week Diet?


Those of you who have no idea what is this diet book that we are talking about. Well, it is a scientific approach to losing up to 12 to 23 pounds in 21 days.

The author, Brian Flatt, has discussed multiple diet combinations in his book and all these diets are connected to each other. The book has been divided into multiple sequential phases starting from detox phase and ending all the way up to low carb phase.

So it is all about controlling what you eat for a few weeks and then, your body will get used to it.

This is no hoax, keep reading and you will realize it yourself.


Who is Brian Flatt?


brian flatt

Brian Flatt in good mood 🙂

Brian Flatt 44 is a fitness trainer, weight loss coach, and runs a fitness center in Southern California with the name R.E.V.

He created the 3-Week Diet meal plan to help his clients lose weight without getting frustrated. He reviewed well over 500 different medical studies and hundreds of diet books from some of the best authors in the world.

After spending more than a decade, he finally created this revolutionary weight loss book which has been helping thousands.

The 3 Week Diet PDF is backed by scientific studies, experimentation, practical experience of the author, and several case studies.

“This is a revolutionary diet because it focuses on reducing cellular inflammation, which is the real cause of weight gain and is something that most diets ignore. Reduce cellular inflammation and you will boost your metabolism and increase your ability to lose weight”, Flatt says.


What 3 Week Diet Can Do For You


In as low as 21 days, you will be able to see astonishing results such as:

  • 12 to 23 pound reduction in weight
  • Increase in energy
  • Faster metabolism
  • 2 to 3 size drop in dress size
  • Better cholesterol level
  • Reduction in cellulite
  • And much more

How the 3 Week Diet Works


The entire diet system has been divided in different sequential and well-designed phases. Each of these phases have been discussed below in detail. Review these phases so as to get a better understanding of how it actually works.

There are four phases:

  1. Detoxification of the liver
  2. Fasting
  3. Fat fast diet
  4. Basal Metabolic Rate (BMR)

1. The detoxification of the liver

It all starts from cleansing your liver.

This helps removing all the harmful toxins from your body. Don’t worry, the 21 day diet plan has all the details on how to do it. There are certain vitamins that you have to use along with a few fruits, pulses, and vegetables.

The detoxification of the liver takes almost a week so for the first week, you will be clearing your liver and body from toxins by eating recommended foods. This process alone will let you lose a few pounds.


2. Fasting

This is the second phase where you have to fast for a day. As soon as you detoxify your liver, you need to fast to get rid of all the remaining toxins from your body and to improve digestion.

This phase needs one day.


3. Fat Fast Diet

The Fat Fast Diet starts on the 9th day. It is time to get rid of the fat.

This phase is where you will start burning fat effectively from your entire body. The fat burning techniques that Flatt has discussed are simply awesome, I must say. I cannot share them here as it will not be justified but take my words, this Fat Fast Diet is the best part of the 3 Week Diet program.

You will not going to eat much in this phase instead, you will only consume energy produced from burning the fat. How to burn the fat, this is what you will find in the 3 Week Diet PDF.

This phase takes 3 days which means you will burn most of the fat from your body in these three days.


4. Basal Metabolic Rate (BMR)

This is the last phase of the 21 day diet program which starts from day 12.

BMR is the estimated number of calories that your body will burn if you do nothing for 24 hours.

This phase has two parts.

In the first part, you will calculate your BMR. It varies from person to person so you have to calculate your BMR according to the formula shared by the author.

Once you have calculated your BMR, you will now find the number of calories that you need as per your BMR.

You will stick to these calories to lose weight.

This phase takes 9 days.

This is how it all works.


Download the FREE 3 Week Diet Introduction Manual


Click here to download the Introduction Manual that is the first part of the 3 Week Diet System.

This 47-page manual will give you a hint of how powerful this diet plan is. This Introduction Manual alone has a whole lot of useful information and facts about weight loss.


3 Week Diet Reviews


Do not take my words, let’s see what customers are saying about this diet plan and how it has helped them lose weight.

Review #1

Review #2

Review #3

Review #4

Review #5

buy 3 week diet plan




Some of the major features of this amazing diet system are stated below.

  • It is a scientific method to lose weight and burn fat. The author has backed pretty much everything by reliable sources.
  • This system comes from an expert who has been in this profession for over two decades now. You can trust whatever he says.
  • This system works for pretty much everyone including men, women, young, and the old.
  • It burns your body fat very quickly. What other diet programs will achieve in a couple months, it can achieve the same (or even better) in less than 21 days.
  • It doesn’t harm your body in anyway. Just in case if it doesn’t work, you will not going to lose anything – it will not harm you at all.
  • It doesn’t just help you lose weight but it deceases cellulite, improves energy level, boost metabolism, cleanse the liver and entire body, maintain cholesterol level, improve skin, and makes you healthy overall.
  • The diet mostly includes natural ingredients such as fruits, vegetables, pulses, eggs, etc. Nothing fancy.



  • This diet program has the potential to help people lose weight quickly – I mean really quickly.
  • The entire program is easy-to-follow. Brian Flatt has kept things simple and straightforward.
  • The 3 Week Diet weight loss program follows a scientific approach to losing weight and burning fat while enjoying better health.
  • It is a practical guide that shows you what actions you have to take to lose weight.
  • You get 60 days money back guarantee with your purchase. This makes it an absolutely risk-free offer.



  • The author has made it look too promotional by claiming that it can help you lose 23 pounds in three weeks. Well, not everyone will be able to lose weight at this pace so don’t expect a miracle. This is one potential drawback of the 3 Week Diet plan that makes it look a quick fix.
  • It includes fasting that might be an issue for some people especially who cannot control their hunger.


Can You Really Lose 23 Pounds in 21 Days With 3 Week Diet Plan?


This happens to be one of the basic questions that people have in their minds.

Perhaps the right question would be:

“Will I lose weight if I buy 3 Week Diet system?”

This seems to be a more reasonable question.

Yes, you will lose weight and you will burn fat. This is something obvious because you will fast, cut carbohydrates, and will follow a strict diet plan so no matter who you are, you will lose weight.

You may or may not lose 23 pounds in three weeks. Some of you will lose 18 pounds. Some will lose 15 pounds. Others will lose 12 pounds.

It depends on several factors including your motivation level, your current weight, consistency, and how strictly you follow the entire system for 21 days.

On a continuum of 12 to 23 pounds, you can land anywhere after 21 days. There are people who lost 23 pounds so this is something achievable.

For instance, if you are around 300 lbs. You can easily lose 23 pounds (or even more) in 21 days because you have a lot of fat on your body and fasting for a day will burn a lot of it.

Since we all are different, have different body structures, and we all have different BMRs so don’t expect the same results.

Brian Flatt has done a great job of linking the diet to the individual’s BMR, which if followed, will show amazing results.

Stick to the plan, be consistent, and you will lose weight. Period.

Get Instant Access to full 3 Week Diet Plan


What’s Included in the 3 Week Diet System


Here is what you will receive with your purchase.

INTRODUCTION MANUAL: I have already offered you the Introduction Manual free of cost. If you missed it, download it free here. It includes specific information on what has to be done and how it has to be done. You have it, enjoy!

DIET MANUAL: This is where the real game begins. The 3 Week Diet Manual offers a customized plan based on your body mass and fat. You will be shown what you have to eat based on your individual body.

There is no guess work here instead you have to choose the exact diet plan after calculating your body mass and fat percentage.

It also includes:

  • What foods to eat
  • What foods to avoid
  • How to keep the weight off forever
  • How to keep eating what you love without any fear of putting weight again

WORKOUT MANUAL: This is though optional but highly recommended since it will boost the weight loss process. The Diet Manual will show marvelous results but the instructions in the Workout Manual will boost the process to an unimaginable extent.

It includes:

  • The super-simple no-excuse 20-minute workout that you have to do 3 to 4 days a week
  • How to target the right fat with exercise
  • It includes the Midsection Miracle Workout that shows you the two abs exercises that you will need for 6-packs

MINDSET & MOTIVATION MANUAL: It will help you keep motivated and upbeat so that you don’t lose focus. After all, losing weight is all about focus. The manual includes tips, tricks, secrets, and tons of resources that will keep you motivated and will help you keep the fat off your body for ages to come.

With so much on offer, can you afford to miss the 3 Week Diet program?




Let me conclude my 3 Week Diet review by quoting the Brian Flatt:

“I want to help people learn what to eat, when to eat and how to eat to lose weight. I also want to help them develop the mindset, or willpower, to lose weight and keep it off.”

This sums it all.

It is simply a weight loss system that tells you what to eat and how to eat it. No rocket science.

Click here to get access to the complete 3 Week Diet system.

If you are still unsure, click here to download the Introduction Manual for FREE, read it, and then decide if it is something worth going for or not.

I wish you all the best with your body and life.

download the 3 week diet plan

Review Date
Reviewed Item
3 Week Diet
Author Rating