The Rapid 800 diet

The Shake That Weight Rapid 800 diet is a low-calorie diet that is medically proven to promote rapid weight loss in individuals with a BMI over 25. This diet involves consuming 800 calories per day (a maximum of 1000 calories) and we recommend you follow it for a minimum of 2 weeks. You will stay on the diet for a maximum of 12 weeks, after which it is recommended that you take a break and return to a regular healthy eating plan. After the diet is over, you should give us maintenance plan Follow

How to Follow the Rapid 800 Diet?

To follow the diet, use a combination of Shake That Weight products and regular healthy snacks. Shake That Weight meal replacements are around calories per serving and contain the right amounts of vitamins and minerals to support your body during a diet. They are also made with specially selected ingredients such as Calcium Casein, a slow digesting protein that reduces hunger and appetite.

Use 3 Shake That Weight meals per day

Each meal is between 150-250 calories. Choose from shakes, bars, noodles, soups, muesli and more. You can eat these meals at any time of the day. Below you will find the full instructions

Drink 2.5 litres of water every day

See below the full instructions of what you can drink

200 kcal extra allowance

You can eat 1 of the list below every day:

  • Make your own healthy snack (examples are in the free help booklet)
  • Another Shake That Weight meal (view here)
  • One serving of vegetables
  • Shake That Weight snack (view here)

How does it work?

Your body uses sugar and fat for energy. Sugar provides quick energy by giving in to glucose in your blood. Your body can get these sugars from your liver and muscles. Once the body has exhausted these quick stores of energy it begins to use fat stored by your body as an energy source. This process helps reduce the fat around your body. Many people have enough fat to maintain energy for months without eating.

By following the fast 800 calorie diet you will begin to quickly make use of your excess fat stores. This is because the Shake That Weight diet products are relatively low in carbs and calories, but also contain vitamins and minerals to support your body. The Shake That Weight products are also made to contain high levels of protein which supports muscle development and we use slow-release energy sources which help moderate your hunger levels.

What if I get hungry?

The first few days are usually the hardest, as your body has to adjust to the new diet. It will get easier, but if you feel hungry, you may have an extra Shake That Weight meal. This should not affect your diet results. You can also eat a healthy snack, such as a serving of fruit or a handful of nuts.

Can I have a home-cooked meal?

You can prepare a meal yourself in addition to using your Shake That Weight products (always use 3 Shake That Weight products to make sure you get the correct amount of vitamins & minerals). Your meal should be 200-400 kcal. It should also contain a lot of protein and few carbohydrates, with a maximum of 30 grams per meal. Try to make healthy choices, for example a serving of protein with lots of vegetables. Avoid white potatoes, white bread, and white pasta.

Guidelines for Water

Drinking water not only keeps you hydrated, it also helps you lose weight. Water makes you feel less hungry and speeds up the body's metabolism so it can burn fat faster. It also helps you digest food and evacuate toxins released during dieting from the body. Drinking water can also prevent constipation, fatigue and headaches. You will also feel more alert and energetic. This is why we recommend 2.5 liters of water during the day. Although, don't drink it immediately, but over the course of the day.

You may also drink

  • Sparkling or flat water
  • Tea and coffee. Avoid sugar and milk. Use sweeteners or skimmed milk.
  • Diet drinks like diet cola. Although, don't use these too much.
  • Drinks with a lower sugar content.

Tips for exercises

Light activities are recommended but not necessary. We do not recommend following this diet in combination with an intensive fitness program.

Any form of exercise is beneficial, but aerobics is the best. This is a form of exercise that gets your heart pumping faster (up to 60% a 70% of maximum heart rate). Choose for example running, cycling or swimming. Be sensible and listen to your body. If it gets to be too much, stop.

Other forms of exercise, such as weight lifting, will help build muscle. Aerobics, however, is much more beneficial for weight loss.

Try to ensure that you exercise for at least 20-30 minutes at a time to ensure that the body has time to burn calories. If you burn a lot of calories with your chosen exercise or feel lightheaded afterwards, you should accommodate this in your diet by consuming another Shake That Weight product or by increasing the amount of calories in the snack.

TIPRemember it is important to drink more water before, during and after exercise to replace fluids lost through sweating.

Frequently Asked Questions

How much weight will I lose?

Weight loss is unique to each person and is subject to your metabolism, starting weight, lifestyle, etc. Although, low calorie diets like this one promote rapid weight loss compared to traditional diets. If you read the reviews and success stories for a while, you will find that customers have lost between 14 and 140 kilograms.

Is the diet safe?

You may be worried that food substitutes are not completely safe, but don't worry; all of our diet plans meet NICE guidelines for low calorie diets and our products have been manufactured to nutritional standards in the UK and Europe. Like all our diet plans, a TFR diet should only be used after a consultation with your doctor and should only last for 12 weeks, or as recommended by your doctor.

What can I eat as a snack?

Your snacks should be low in carbohydrates and sugars. Ideally, they should also be high in protein and made from natural ingredients. Remember that you should aim for a total calorie intake of 200 calories. We recommend that you make use of the website, keep track of the nutritional values of the food you eat. 

Some snack ideas

- Vegetable skewers. For example celery, cucumber, carrots or peppers with a low-carb dip like tzatziki or peanut butter.

- Hard-boiled eggs

- Cold cuts such as a few slices of ham, turkey or chicken breast

- A can of tuna. Can be mixed with a little mayonnaise and some lettuce

- Handful of nuts

- Slice of smoked salmon with cream cheese

- Grilled chicken breast

- Some olives with ham and small pieces of cheese

Search Google for "low calorie snacks" for more great ideas or go to the website and check out the Shake That Weight snacks like the waffles and chips.

prohibited food

Refined starch 

- Biscuits, pastry and cakes

- Pizza

- Sugary processed breakfast cereals 

- White bread

- White flower 

- White pasta

- White rice

Refined Sugar 

- Biscuits, cakes and pastries 

- White and brown cane sugar

- Chocolates

- Pizza 

- Honey and jam 

- Prepared meals and sauces

- Jellies 

- Candy and snack bars

How long do I have to follow the diet?

You should follow the diet plan for a maximum of 12 weeks. If you want to continue after that, be sure to contact your doctor and ask when you can start again. It is usually recommended to eat normally for at least 1-2 weeks or to follow our maintenance plan, but this is different for everyone.

If your BMI is below 25 during this diet, then you have achieved your goals and should switch to the maintenance plan to ensure an easy transition to normal eating.

Can I exercise?

When following the diet, you should only undertake light sporting activities such as walking, cycling or swimming; this is due to the reduced number of carbohydrates in your diet. After exercise, you should always replace your lost calories so that you stay above the minimum number of daily calories and to prevent your body from starving itself. You can do this by using an additional Shake That Weight product.

Can I drink alcohol?

Alcohol is not recommended, but a small drink is acceptable. You do need to keep in mind that alcohol can have a greater effect on you during this diet.

Are there any other side effects?

This diet is a major change regarding your eating habits, therefore it is possible to experience the following side effects:

Headaches (you can take regular painkillers until they stop), Nausea, Fatigue, Irregular menstruation, sweet-smelling breath, constipation (try a laxative or fiber supplement). Side effects will lessen after some time has passed.

If side effects continue to occur, contact your doctor.

Important notes

  • Please check with your doctor before starting any diet. If you have any health problems, you should always contact your doctor to make sure this plan is right for you. We also recommend visiting your doctor regularly for check ups during your diet.
  • You should not follow the diet for more than 12 weeks without a break of 1-2 weeks between diets.
  • Low calorie diets are only recommended for individuals with a BMI higher than 25. If your BMI is lower than 25, you have reached your goal and should switch to our maintenance plan to maintain your weight loss.
  • Only light exercise is allowed in this plan.
  • This diet plan is not suitable for children under 16 or breastfeeding mothers.

Do you have a question?