The three week diet reviews

Want to lose weight in 21 days or less? Brian Flatt’s 3-Week Diet plan may just be the right solution for you.

Is it possible? Let’s find out in our comprehensive reviews of this product.


the 3 week diet

The 3 Week Diet is a diet that claims to have the dieter losing HUGE amounts of weight only only 3 weeks. It almost sounds too good to be true with claims like 15-20 lbs in only 3 weeks however the author, Brian Flatt tells us that he has a scientifically proven system for fat loss that will make this safe and possible for just about anyone.

This system includes :

  • Introduction Manual– 43 pages: In The Introduction Manual you won’t find boring information and boring introduction of this diet plan. You will find scientific explanation for this diet program.
    You will learn what you need to know to succeed and what kind of specific supplements can help you to increase your metabolism and your level of energy what science is behind those supplements.
  • Diet Manual – 22 pages: This section serves as a guide to how you will be eating during the 21 day period, i.e. the types of foods, timing of meals, and calculating your basal metabolic rate. There are a total of 4 phases of the diet.
  • Workout Manual – 17 pages: Provides people with knowledge and detailed information about daily walk, consistency, warm up, full body fat blasting workout. Besides, people can discover some specific instructions and recommendations for effective workouts for weight loss, such as goblet squat, bent-over row, ab blasters, and so on.
  • Mindset and Motivation Manual – 13 pages: This part has been made for this very purpose to motivate and encourage you towards your goal. It will help you to create a mindset that will keep you energetic and dedicated towards your goal. And the success lies behind it.

How the 3 week Diet System Works?

4 Phases in Which The Three Week Diet Works

Phase #1 – Liver Detoxification (7 days)

The phase #1 helps to detoxify the liver. It provides assistance to get rid of all the harmful toxins from the body. The diet includes use of Vitamins that would help to perform the detoxification process. The use of specific vitamins will help to accelerate the sensitivity of insulin. It will help control the blood sugar levels as well and turn your body into fat burning machine.

Brian Flatt also stresses on use of certain fruits, vegetables and pulses, which contain specific vitamins and proteins to help catalyze the process. The process is implementable within one week.

Phase #2 – 24 hours Fasting (1 day)

Once you’ve cleansed your body, you can move onto phase two: a one day fast. Fasting starts after your last meal on the 7th day of the program and lasts just 24 hours.

A quick fast will give your digestive system a rest. And it will cleanse any toxins you may have left in your body after the first phase!

Phase #3 – Fat Fast (4 days)

The third phase or the Fat fast phase means what it says that is it does make the body lose fat through fast and scientifically proven methods. This phase commences on the 9th, 10th and 11th days and the efficiency of liver is properly checked in this phase. In this phase, the body keeps burning the stored fat from the belly and hips region.

After the two earlier phases, the body starts to crave for fat and it is important to note that it does require some amounts of fat as essential. After the regular limit of consuming calories from fat, the body signals the liver to start consuming fat for energy requirements from the muscles. Therefore, it is necessary to provide some quantities of fat to the body.

Phase #4 – Focus On Your BMR

The last phrase will last for 9 days. In the 9 days, you will be consuming calories that are based on your unique BMR and weight loss goals.

There are 2 steps in this phrase. In the first step you will be learning how to determine your BMR and in the second step Brian will show you how to create calorie deficient based on your unique BMR. This will help you to achieve your desired results quickly doesn’t matter either it is about getting six-pack abs or getting single digit body figure.

Pros, Cons and Overall Rating


  • Rapid results -Very fast weight loss results. Up to 30 pounds are possible.
  • Easy to follow – Everything is laid out for you. All you have to do is follow the blueprint to start losing excessive pounds.
  • No gym membership or special equipment required- Users save cash owing to exclusion of workout costs that are often strenuous and pricey.
  • It has a 60-day full money back guarantee so the user should feel assured and confident in using it.


  • Intermittent fasting can be tough for some people.
  • Working out, though short can also be tougher due to low carb eating/fasting.

Overall rating

score breakdown

The score of the three week diet is 4 out of 5 stars!

Is there a guarantee?


100% satisfaction, 60 day money back guarantee.  Lose weight or get your money back!


As with any type of program, weight loss or otherwise, you need to put in the effort to see results. It won’t happen overnight, but with the 3 week timeline and risk-free guarantee there’s really no excuse not to try it. Overall, the three Week Diet gets my stamp of approval and offers a highly effective, novel way to lose wight and get in shape fast, without the fuss.

IT’S YOUR TURN: You’ve read the review and know what to expect – now’s the time to take action! If you’re excited, motivated and ready to try the program, click below to get started!