Resultaten met 5 Day Fast

  • Boost your sports performance

    During 5 Day Fast your body learns to use fat for energy, ideal for endurance sports such as running or cycling. You reach the ketosis phase, which allows you to exercise longer and more efficiently with a lower heart rate. This means better performance without your heart working overtime!

  • Burn fat and lose weight

    During 5 Day Fast you can lose 3-7 kilos! This is mainly fluid from your muscles, but you also lose fat - up to 2 kilos if you are slightly overweight. Plus, the more active you are, the more fat you burn! With 5 Day Fast you eat and exercise in such a way that your body starts using fat for energy and that process continues for a while afterwards. This is your chance to become slimmer and fitter!

  • Break unhealthy eating patterns

    With 5 Day Fast you break unhealthy eating patterns. You eat fresh, high-quality vegetables, fruit and nuts and even though you eat less, you feel better. Even if you eat unhealthy immediately after the program, your body will provide immediate feedback from within. With 5 Day Fast you reset and break eating patterns. The result? You feel more energetic, fitter and more vital than ever!

What is 5 Day Fast

5 Day Fast is a 5-day program to reset your health and improve your sports performance.

During this 5-day treatment you simulate 'fasting' while continuing to eat and drink, unlike, for example, Sports Fasting and real fasting.

What's in the box:

  • Menu for 5 days and shopping list
  • Supplements: Omega, Glycerol, Green Powder, ION* Gut Support, Magnesium, Multivitamin, Zeolite
  • Invitation for personal guidance via our weekly WhatsApp group (optional)

Order 5 Day Fast
  • Jorrit Stracke (35 years old)

    "I do triathlons and have also done sports fasting, but I won't do that anymore: that really means more and longer suffering."

  • Harmen Meijer (33 years old)

    “The biggest benefit for me as an athlete is starting a new marathon program and losing some kilos before the start of the program and the race itself.”

  • Nathalie Bremer (51 years old)

    "What a great experience. I didn't really experience any feelings of hunger. The “5 Day Fast breakfast” is a keeper. I have also become more aware of what I ate in a day. I can recommend 5 Day Fast."

Meet Ramon Siljade, founder of 5 Day Fast

Hello, I'm Ramon Siljade, founder of 5 Day Fast. After a career as a professional basketball player and setting up the Apollo Endurance Lab, the largest triathlon and endurance sports community in Amsterdam, I have broadened my focus to improving health and sports performance.

With my experience in top sports and healthcare, I founded 5 Day Fast. This program is intended to boost your health in just five days, with proven effects on your health and sports performance.

More about Ramon Siljade

This is what you get delivered to your home if you order 5 Day Fast:

  • Menu for 5 days
  • Shopping list (you have to do your own shopping)
  • Supplements: Omega, Glycerol, Green Powder, ION* Gut Support, Magnesium, Multivitamin, Zeolite
  • Invitation to participate in our WhatsApp group during your 5 Day Fast that starts every Sunday. Participation is optional.
Order 5 Day Fast

Frequently Asked Questions

What kind of results can I expect from 5 Day Fast?

With 5 Day Fast you can do a lot of good for your body. Here are a few things you can improve:

  1. Recover : You help your intestines become healthier. This means that your intestines can work better and cause fewer problems, such as with leaky gut.
  2. Stimulate : Your body becomes better at cleaning out unhealthy substances, such as heavy metals stored in fat. It also helps your digestion and improves your ability to burn fat as an energy source.
  3. Regenerate : Your body will "clean up" and renew itself. This means that you become healthier on an organ level, your body clears away old, incorrectly produced proteins (plaque) and even activates stem cells.
  4. Supplement : The program ensures that your body gets the important nutrients it needs.

So, by participating in 5 Day Fast, you do much more than just lose weight. You make your entire body healthier!

Are the results of 5 Day Fast guaranteed?

Yes, results from the 5 Day Fast program are guaranteed for everyone if you eat and drink what is on the menu and stay active according to the proposed exercise plan. The program is carefully balanced to guarantee optimal results. The program is designed so that you consume less energy than your body uses at rest. This automatically activates all kinds of restorative processes in your body, without you having to do anything extra. But please note: it is very important that you stay active and exercise during the five days. The more active you are during your 5 Day Fast week, the greater the positive effect on your body will be!

How much weight can I lose?

By following Ramon Siljade's 5 Day Fast program, you can lose between 3 and 7 kilos in one week. It is important to know that this is primarily fluid that comes from your muscles. This means that after the 5 days you will regain some weight as your body replenishes this fluid. But the good news is that if you're a little overweight, you'll probably also lose 1 to 2 pounds of body fat every time you participate in 5 Day Fast. And remember, the more you exercise and exercise during these five days, the better your results will be. This ensures that your body has to switch completely to fat burning (ketosis) more quickly.

The data from our participants from the past three years shows that participants with a BMI of +25* who do 3x 5 Day Fast in 8 months lose about 6 to 9 kg of body fat over that period.
(*A BMI of 25+ means that you are not extremely heavy, but that you cannot see your abdominal muscles in the mirror. The higher the BMI, the more body fat you will lose after three participations in 8 months)

How does fat burning work with 5 Day Fast?

With 5 Day Fast you eat and drink in a special way so that you consume less energy than your body normally uses, even if you are just resting. This means that your body looks for other sources of energy. Guess? One of those sources are your fat cells! So by joining 5 Day Fast, the program helps your body use fat for energy. Through 5 Day Fast, your body also learns better to switch between fat and carbohydrates as an energy source. That's called being metabolically flexible. Metabolic flexibility directly helps your health and your sports performance.

How does 5 Day Fast help improve my sports performance?

During the 5 Day Fast program you teach your body to use different energy sources in a better way by activating your 'fat burning engine'. Ultimately, your body switches completely to fat burning during 5 Day Fast. This is also known as "being in ketosis". This teaches your body to use fat effectively as an energy source. This improves performance in all sports that require continuous exercise for more than 45 minutes.

Why do you experience that improvement during exercise? This is because your body can better use fat for energy during exercise. If you use more fat as an energy source during exercise at the same running speed, this will result in a lower heart rate and perceived exertion than before at the same speed. Pure profit.

How does 5 Day Fast differ from sports fasting and intermittent fasting?

Although sports fasting and other forms of fasting can produce similar results, 5 Day Fast offers unique benefits.

1. A big difference is that 5 Day Fast only lasts five days and is less intense than, for example, sports fasting.

2. The 5 Day Fast program is backed by more than 30 years of scientific research. Most other forms of fasting have little or no evidence of this. This scientific substantiation is not only crucial to demonstrate the positive effects, but also essential to guarantee the safety of the program. In addition, the same research also shows that your entire muscle mass is preserved if you do a 5 Day Fast. And this is crucial not only for athletes, but for everyone!

3. Another advantage of our program is that we not only help you during the five-day treatment, but also provide advice on how you can integrate healthy food products into your daily life after the program. We offer practical tips on what to eat and where to find these healthy products.

4. Intermittent fasting can mean many things. For most people it means: every day, so structurally, 8 hours of eating and drinking, 16 hours of nothing eating or drinking. This does not have the same scientific basis as 5 Day Fast. And you cannot achieve the same effects that you can achieve with the 5 Day Fast program. Everyone who participates in 5 Day Fast will receive substantiated advice from us immediately after their first participation about which form of intermittent fasting best contributes to good health.

Is the 5 Day Fast program possibly harmful?

No, the 5 Day Fast program is based on more than 30 years of scientific research and is formulated to be safe for use. It is one of the few programs that can guarantee this. In addition, the same research also shows that your entire muscle mass is preserved if you do a 5 Day Fast. And this is crucial not only for athletes, but for everyone!

With 5 Day Fast you don't have to worry about experimenting with your own health. The program has been carefully compiled to support you in a responsible way in improving your health and sports performance.

How often and when do I eat during the 5 Day Fast program?

During the 5 Day Fast program you have three fixed eating moments every day:

  1. Breakfast : Start your day with a healthy start.
  2. Lunch : An afternoon meal to give you energy for the rest of the day.
  3. Dinner : A nutritious meal to end the day.

But that's not all! You can also eat healthy snacks in between. This way you stay well nourished and energetic all day long.

What do I eat during the 5 Day Fast program?

The menu of the 5-day program is completely vegan.

During the 5 days of the program you mainly eat vegetables, fruit and nuts.

When you go shopping, we advise you to choose high-quality products, such as those with an 'EKO' or 'Bio-Dynamic' quality mark.

These products are not only good for you during the program, but also afterwards they help improve your health and ensure a better digestive system.

Why do you recommend using organic fruit and vegetables for 5 Day Fast?

At 5 Day Fast we recommend using organic fruit and vegetables. Why? Because organic products contain no/less harmful pesticides. This is important, especially because some products, such as glyphosate, are not good for your digestion and the micro-organisms involved. Your digestive system not only digests food in your stomach and intestines, but is also important for your overall health. So by using organic products, you help your body become healthier!

Do I have to prepare my own meals at 5 Day Fast?

Yes, at 5 Day Fast you cook your own meals. But don't worry, it's simple! We provide you with a handy menu and a shopping list. Each dish will take you about 15 to 25 minutes to prepare. This way you can enjoy delicious, healthy meals quickly and easily!

Do I have to cook separately for myself if I participate in 5 Day Fast?

Not necessary! If you follow the 5 Day Fast program, you will eat special dishes. But if you want, your family members can eat the same meals as you. They would just need larger portions. This way you can enjoy healthy meals together without extra effort in the kitchen!

What do the supplements in the 5 Day Fast program do and what are their ingredients?

The ingredients of the supplements in the 5 Day Fast program have been carefully selected for their specific benefits. Each supplement contributes to the overall health and well-being of 5 Day Fast program participants, with specific benefits targeting different aspects of the body and metabolism.


  • Function: This supplement improves communication between your cells and microorganisms in your stomach and intestines. Not only does this increase your population of microorganisms (which is good!), but it also helps protect against harmful substances like glyphosate and other chemical pesticides.
  • Ingredients: Terrahydrite® (humic extract and purified water), rich in bacterial metabolites that create fulvate, essential for the action of the supplement.


  • Function: Our plant-based, natural glycerin keeps your skin soft and hydrated. It prevents moisture loss from the skin and protects against muscle breakdown during fasting, as shown in clinical studies on the Fasting Mimicking diet.
  • Ingredients: Glycerin.


  • Function: Omega 3 is in the cell wall of every cell in your body. It immediately ensures that you can absorb nutrients properly at cellular level and remove waste properly.
  • Ingredients: Fish oil (EPA and DHA), cold-pressed organic olive oil, lemon flavor, vitamin D3, antioxidant blend (natural rosemary extract, vitamin E).


  • Function: Your body stores toxic substances in fat cells. During 5 Day Fast, these stored toxic substances can be released because you use more/better fat for energy. The Detox capsules ensure that these toxic substances (heavy metals in the body, such as lead, cadmium and mercury), are removed through the urine.
  • Ingredients: Micronized zeolite, sodium bicarbonate, magnesium stearate.


  • Function An optimally absorbable multivitamin with a carefully composed mix of essential nutrients.
  • Ingredients: B vitamins, vitamin D3, K1, K2, calcium, magnesium, Q10, citrus bioflavonoids, lutein, zeaxanthin, meso-zeaxanthin.

Green Powder

  • Function: A blend of vegetables, fruits, sprouts, mushrooms and greens for extra nutrients.
  • Ingredients: Spirulina, wheatgrass, barley grass, chlorella, various fruits and vegetables, sprouts, mushrooms, and digestive enzymes.


  • Function: This mineral is crucial for hundreds of processes in our body, such as muscle function, energy production and regulating the wake/sleep rhythm.
  • Ingredients: 47% magnesium chloride, crystal water.

What if I don't strictly follow the 5 Day Fast program?

The 5 Day Fast program is a mild form of fasting, where we imitate the effect of traditional water fasting (where you take nothing but water) in a fully controlled setting and in a safe manner.
To experience the full benefits of the 5 Day Fast program, such as the activation of regenerative processes in your body, it is crucial that you strictly adhere to the stated amounts. If you do not stick to the prescribed amounts and occasionally 'skip', you will probably not achieve the desired conversion. That's why it's really important to follow the program closely to experience the full benefits.

5 Day Fast is designed so that everyone will make it! Yes, you too ;)

Does everyone get the same food and supplements at 5 Day Fast, regardless of their weight?

Yes, with 5 Day Fast everyone gets exactly the same amount of food and, with the exception of one supplement (this supplement is based on weight), the same (amounts of) supplements, regardless of whether someone weighs 55 kg or 120 kg.

The reason for this is that everyone consumes food (energy) below his/her resting metabolism (that is your resting energy expenditure). This means that you consume less energy than you would use if you lay still on the couch all day. In practice, the resting metabolism of the 55 kg person can even be higher than that of 120 kg. Finally, all research into the 5 Day Fast program has been done this way. This means we can guarantee both safety and positive effects for everyone.