Blog Diets 4-Day Diet Plan: A Simple Guide to Easy Belly Fat and Weight Loss Meals

4-Day Diet Plan: A Simple Guide to Easy Belly Fat and Weight Loss Meals

When it comes to losing weight, your diet plays an important role in how you’ll manage to lose the extra pounds and achieve your goals, if at all. The problem for many comes in figuring out what to eat. 

With our busy schedules that don’t allow time to make proper and healthy meals plus quick solutions such as prepackaged meals and takeout, it’s very easy to eat a lot of convenient but high-calorie foods, which can make losing weight difficult.

This is where a 4-day diet plan comes in. Such a plan is tailored to help busy people who want to eat healthier, live healthier, and possibly lose some extra pounds without the hassle of always wondering what to eat. 

The idea is to plan out and prepare your healthy meals for 4 days of the week, which is more manageable to start with than an indefinite period of dieting. As it’s a 4-day diet and not the full 7 days, it allows you some wiggle room to be creative, eat any leftovers to prevent food waste, and even indulge in something extra on the 3 other days without feeling restricted. You can turn it into something more long-term by planning and prepping your healthy meals 4 days out of every week.

If this sounds like something you’d be interested in, read on to learn more about what this eating plan is all about, what to shop for when coming up with a 4-day diet menu, simple meal ideas, and much more.

What Is the 4-Day Diet?

Unlike other diet plans that are super restrictive in terms of what you can and can’t eat and how many calories you should consume a day, the 4-day diet plan is a simple guideline that helps show you some healthy ingredients to shop for as well as ideas of meals to eat in order to lose weight.

This 4-day meal plan is a guide for anyone who wants to plan their meals ahead of time and lose weight in a healthy way through healthy eating by focusing on nutritious foods, the right portions, and a balanced diet.

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What Is the 4-Day Belly Fat Diet?

This is understood to be a meal plan that focuses on foods that may help you lose the fat around your belly, but no specific foods can actually target fat loss from a specific area of the body. Instead, by incorporating a variety of nutritious foods into a balanced, reduced-calorie diet, you can reduce the fat around your midsection and everywhere else in the long term.

The Best Foods for a Belly Fat and Weight Loss 4-Day Diet Plan

If you’re looking to lose belly fat or, more realistically, fat all over your body, research has suggested that you should consume a balanced diet that is rich in nutrient-dense foods. You’re advised to focus on consuming lean proteins, whole grains, healthy fats, a variety of fruits and vegetables, and dairy products (or alternatives) while limiting ultra-processed and high-saturated fat or added-sugar foods (14)

Whole grains 

These include brown, black, or wild rice, quinoa, oats, buckwheat, bulgur, corn, and whole-wheat breads and pastas. 

Research conducted on different demographics over the years has shown that an increased intake of whole grains is associated with visceral fat (belly fat) reduction, weight loss, and lower BMI (8, 17, 19).

Lean proteins 

This includes poultry (turkey, duck, chicken, etc.), plant protein (all kinds of beans and lentils), lean beef, protein powders, fatty fish (such as salmon, anchovies, and mackerel), other seafood such as crab and shrimp, and low-fat cottage cheese.

Protein has long been seen as a way of preventing and treating obesity through weight loss and management. This macronutrient is said to do this by slightly increasing the calories burned, preventing the loss of lean body mass (muscle), and regulating energy intake and appetite reduction. Protein helps you feel full for longer after eating, so you eat less overall(12, 18, 4).

4 days diet plan  

Fruits and vegetables 

Fruits include berries, pineapples, apples, mangoes, watermelon, peaches, pears, oranges, avocados, tangerines, bananas, and dragon fruit.

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Vegetables include leafy greens such as broccoli, kale, cabbage, cauliflower, lettuce, and collard greens, and non-starchy vegetables such as mushrooms, daikon, celery, beets, bean sprouts, okra, eggplants, peppers, squash, tomatoes, squash, and onions (13). You can also eat starchy vegetables and fruits such as carrots, sweet potatoes, potatoes, winter squash, and plantain.

The best way to consume your fruit and vegetables is to buy whatever is in season – it’s easier and cheaper. Research and study reviews over the years continue to show that an increased intake of fruits and vegetables helps with weight management as well as fat and weight loss (9, 3, 1).

Fruits and leafy green vegetables are fantastic for making quick weight loss smoothies that can be used as a breakfast meal or a snack during the day. Add a handful of oats and/or a scoop of protein powder to make them higher in protein and fiber.

Read more: 24 Weight Loss Smoothies, 2 Diet Plans, and 5 Belly Fat Smoothie Secrets

Healthy fats 

These come from several sources, including fatty fish, avocados, olive oil, nuts, seeds, and eggs.

Research has shown that the increased consumption of quality fat (monounsaturated fatty acids and/or polyunsaturated fatty acids) in place of saturated fats helps with overall health and the reduced risk of cardiovascular diseases and also has beneficial effects on body weight and obesity (2, 16).

Dairy and dairy products 

Dairy products get a bad name with many claiming that they can lead to fat and weight gain. 

However, scientific research begs to differ with studies showing that increased dairy consumption (particularly on energy-restricted diets) may help with weight and fat mass loss while also promoting bone health and helping prevent the loss of lean body mass (6, 5). If you can’t consume dairy due to being lactose intolerant or for ethical reasons, plant-based alternatives are acceptable.

How Can I Lose Weight in 4 Days?

Contrary to what you may expect, this 4-day meal plan is not a miracle worker. Instead, it’s a template to show you what you can eat on a journey of slow, steady weight loss rather than quick fixes.

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Remember that according to the Centers for Disease Control and Prevention, a safe and sustainable rate of weight loss is 1 to 2 pounds per week (10), so you shouldn’t expect to lose this amount or more in just 4 days. 

Instead, we urge you to adopt healthy habits, such as incorporating regular exercise and eating a balanced diet, as this will lead to long-term weight loss success. The science of habit formation suggests that it takes an average of 66 days to form a new habit, so the four-day cycle of this diet may not be enough time to establish healthy habits for maintaining your weight loss (11).

While you’re on this diet, you should keep in mind that the 4-day meal plan is a way to jumpstart your long-term weight loss plans, but not a quick fix that will work in the said 4 days. You can turn it into something more long-term by using it as a template to plan and prepare healthy meals for 4 days every week. 

4 days diet plan  

Can I Lose 10 Lbs in 4 Days?

No, you most likely cannot. As stated above, weight loss is a long-term journey that requires dedication and patience. It’s not a quick-fix process that works in just 4 days, a week, or even a month.

As we’ve seen from the advice given by the CDC, it takes about a week to lose 1 to 2 pounds. Using these calculations, we can see that hoping to lose 10 pounds in 4 days is an extremely unrealistic goal that will leave you disappointed. Instead, we suggest that you adjust your goals using a more realistic lens.

If you follow a balanced healthy diet with a calorie deficit and also workout, you’re incredibly likely to lose 10 pounds in 5 to 10 weeks. If you’re willing to follow such a diet, here’s a simple 4-day diet plan to help you make a step toward losing 10 pounds in the longer term.

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Simple 4-Day Diet Plan for Weight Loss

Adjust portion sizes as needed based on individual requirements and goals.

Day One

  • Breakfast: 1 cup of low-fat Greek yogurt topped with ¼ cup of raspberries and 3 tbsp of chopped walnuts
  • Midday snack: Protein smoothie – spinach and peanut butter with banana or strawberries, mango, protein powder, and chia seeds
  • Lunch: Turkey sandwich on whole-grain bread with tomatoes, lettuce, and pickled onions
  • Snack: Plain salted popcorn and a cup of blueberries
  • Dinner: Grilled salmon with cauliflower rice and salsa
  • Snack: 1 apple with a tbsp of peanut butter

Day Two 

  • Breakfast: 2 boiled eggs, half an avocado on whole-wheat toast, and a few grape tomatoes
  • Snack: ¼ cup whole almonds and an apple or banana
  • Lunch: Bean soup with naan or sourdough bread
  • Snack: 1 orange
  • Dinner: Chicken and vegetable wraps with oven-baked sweet potato fries

Day Three

  • Breakfast: Porridge oats topped with a sprinkle of cinnamon, half a banana, and ⅓ mango
  • Snack: Overnight chia pudding topped with raspberries and runny peanut or almond butter
  • Lunch: Roasted vegetables (chickpeas, sweet potatoes, carrots) with a spinach salad
  • Snack: 1 bell pepper with cream cheese, garlic, and chives
  • Dinner: Lemon garlic roasted salmon with black rice/quinoa and a lettuce tomato salad

Day Four 

  • Breakfast: Two slices of wholegrain toast with spread, sliced or mashed banana, and a serving of fat-free Greek yogurt.
  • Snack: 2 tbsp guacamole with raw carrot, cucumber, and bell pepper sticks
  • Lunch: Mediterranean quinoa bowl – Chickpeas, cucumber, cherry tomatoes, olives, parsley, and quinoa with a Greek yogurt or simple vinaigrette dressing
  • Snack: 2 cups air-popped popcorn and 1 medium-sized apple
  • Dinner: 3 oz grilled chicken served with stir-fried kale, steamed broccoli, and 1 cup pasta with 1/4 cup tomato sauce
  • Snack: 1 cup warm milk of your choice

Remember that this is just a simple guide. You don’t need to eat exactly like this if you don’t want to. Feel free to replace ingredients as you please. For those who want to follow a 4-day diet plan as a vegetarian, this plan can be used as a guide too. Simply replace whichever animal protein options you can’t eat with whatever you’re allowed to eat.

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Is a 4-Day Meal Plan the Same as a 4-Day Detox Diet Plan?

No, it isn’t. A 4-day detox diet to lose weight may sound the same as a 4-day meal plan, but they’re not the same. 

Detox diets are meal plans that promote extreme fasting followed by a strict diet of just fruit, vegetables, fruit juices, and water. They claim that by doing this, you’ll lose weight faster, clear out toxins from your body/gut, and may even achieve clear skin. 

Despite the huge claims made by proponents of these diets, research has shown that such eating plans do more harm than good. One study review published in the Journal of Human Nutrition and Dietetics stated that there was no compelling research to support the use of “detox” diets for weight management or eliminating toxins from the body (7).

Another review published two years later stated that while these detoxification and juicing diets may cause initial weight loss, you’ll most likely gain all the weight back as soon as you stop juicing (15). Basically, you’ll starve yourself for nothing.

Instead of looking for a 3-day juice cleanse recipe to ‘detoxify’ your body and lose weight, simply try to balance your overall diet. A healthier diet will help you lose weight in a sustainable way over time. It will also help the body’s natural detoxifying organs (the skin, lungs, kidneys, and liver) do a better job of detoxifying the body and blood.

Read more: Your Guide To The 7-Day Protein Diet Plan for Weight Loss

4 days diet plan  


  • How much weight can you lose in 4 days on a water fast?

Some sources claim that you can lose up to 2 pounds (1 kg) during a 24 to 72-hour water fast. However, this has no scientific backing. You should also know that any weight lost during this time is most likely not from fat but from water stored in the body. As soon as you start to eat and drink fluids as normal, the scale will go right back to the initial number.

  • Is fasting for 4 days bad for you?

Yes, it is. Going without food and water or with just very little food and water for more than 24 hours straight is not recommended unless it is done under medical supervision. It can put your health and life at risk.

  • What happens if you only eat 1 meal a day?

While eating one meal a day (aka OMAD or 23:1 intermittent fasting) has become quite popular, it isn’t suitable for everyone. Eating just once in 24 hours can lead to extreme fatigue, reduced energy levels causing you to feel weak and shaky, mood swings, concentration problems, and feelings of extreme hunger.

  • What are the benefits of fruit fasting?

There are no scientifically proven benefits of fruit fasting. It is a fad diet just like juicing. If you want to try this diet as a means of losing weight or increasing your fruit intake, we suggest reducing your calorie intake by at least 500 kcal per day or simply eating fruits as snacks between meals throughout the day.

The Bottom Line

If you’re looking to lose weight, this 4-day diet plan offers an introductory look at what a healthy, nutritious diet for weight loss and belly fat reduction may look like. To ensure you reach your goals, add exercise to your routine, drink more water, and find out what your calorie deficit is. Following the meal plan in the long term but tailoring it to fit your calorie deficit needs will help you reach your goals more quickly.


This article is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional advice or help and should not be relied on to make decisions of any kind. Any action you take upon the information presented in this article is strictly at your own risk and responsibility!


  1. A Comprehensive Critical Assessment of Increased Fruit and Vegetable Intake on Weight Loss in Women (2020,
  2. A healthy approach to dietary fats: understanding the science and taking action to reduce consumer confusion (2017,
  3. Changes in Intake of Fruits and Vegetables and Weight Change in United States Men and Women Followed for Up to 24 Years: Analysis from Three Prospective Cohort Studies (2015,
  4. Clinical Evidence and Mechanisms of High-Protein Diet-Induced Weight Loss (2020,
  5. Dairy Foods, Obesity, and Metabolic Health: The Role of the Food Matrix Compared with Single Nutrients (2009,
  6. Dairy Intake Enhances Body Weight and Composition Changes during Energy Restriction in 18–50-Year-Old Adults—A Meta-Analysis of Randomized Controlled Trials (2016,
  7. Detox diets for toxin elimination and weight management: a critical review of the evidence (2017,
  8. Effects of Whole Grain Wheat Bread on Visceral Fat Obesity in Japanese Subjects: A Randomized Double-Blind Study (2018,
  9. Increased vegetable and fruit consumption during weight loss effort correlates with increased weight and fat loss (2012,
  10. Losing Weight (2023,
  11. Making health habitual: the psychology of ‘habit-formation’ and general practice (2012,
  12. Metabolic advantages of higher protein diets and benefits of dairy foods on weight management, glycemic regulation, and bone (2015,
  13. Non-starchy Vegetables (n.d.,
  14. Optimal Diet Strategies for Weight Loss and Weight Loss Maintenance (2021,
  15. Popular Weight Loss Strategies: a Review of Four Weight Loss Techniques (2017,
  16. Quality of Dietary Fat Intake and Body Weight and Obesity in a Mediterranean Population: Secondary Analyses within the PREDIMED Trial (2018,
  17. The Relationship between Whole Grain Intake and Body Weight: Results of Meta-Analyses of Observational Studies and Randomized Controlled Trials (2019,
  18. The role of protein in weight loss and maintenance (2015,
  19. Weight loss induced by whole grain-rich diet is through a gut microbiota-independent mechanism (2020,
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