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Nutrition Diet: What is the best food to break a 20 hour fast?

5 min read

According to a 2025 article from GoodRx, starting with small portions of hydrating, easy-to-digest foods is crucial when ending a fast to prevent gastrointestinal discomfort. So, what is the best food to break a 20 hour fast to ensure a smooth and gentle transition back to eating?

Quick Summary

The best food to break a 20-hour fast consists of small portions of hydrating, easy-to-digest items like bone broth, simple smoothies, or cooked vegetables. Focusing on lean protein and healthy fats helps to replenish nutrients gradually, preventing digestive upset and blood sugar spikes.

Key Points

  • Start Slow: Begin with small portions and liquid foods to gently wake up your digestive system.

  • Prioritize Easy-to-Digest Foods: Opt for options like bone broth, simple smoothies, cooked vegetables, and lean protein to avoid discomfort.

  • Hydrate First: Drink a glass of water, coconut water, or broth to rehydrate and replenish electrolytes before eating solid food.

  • Avoid Heavy and Processed Foods: Steer clear of high-fat, fried, and sugary items, as well as complex raw fibers, to prevent digestive upset and blood sugar spikes.

  • Focus on Protein and Healthy Fats: Incorporate eggs, fish, avocado, or nuts in moderation to promote satiety and sustained energy.

  • Listen to Your Body: Pay close attention to how different foods affect you and adjust your refeeding strategy based on your personal tolerance.

In This Article

The Importance of Reintroducing Food Gently

Breaking a 20-hour fast, a common form of intermittent fasting often called the Warrior Diet, requires a thoughtful approach to avoid digestive distress and maximize health benefits. Your digestive system has been at rest, and suddenly overwhelming it with a heavy, complex, or high-sugar meal can lead to bloating, cramps, and nausea. This is because your body needs time to ramp up its production of digestive enzymes again. The goal is to reintroduce nutrients in a way that is gentle on your gut, replenishes your hydration, and provides sustained energy without causing a sharp insulin spike. Prioritizing easy-to-digest, nutrient-dense whole foods is the safest and most effective strategy.

Your First Bites: Easy-to-Digest Choices

When your eating window opens, start with a small, light meal and focus on rehydrating. A glass of water or a hydrating, electrolyte-rich beverage should be your first step. Wait 30 minutes to an hour before having your first proper meal.

Bone Broth

  • Why it works: Rich in electrolytes like sodium and potassium, bone broth helps replenish lost minerals and rehydrate the body gently. It's easily digested and provides a comforting dose of collagen and amino acids that can support gut health.
  • How to serve: A warm, low-sodium bone or vegetable broth is an ideal first option to reawaken your digestive system.

Simple Smoothies

  • Why it works: A simple smoothie is easy for the body to process because the ingredients are already blended, reducing the work required for digestion. It can be a great way to deliver a concentrated dose of nutrients.
  • How to serve: Use ingredients like coconut water for electrolytes, a ripe banana for easily digestible carbs and potassium, and a handful of spinach. Avoid heavy ingredients like oats or protein powder in your very first serving.

Cooked Vegetables

  • Why it works: Cooking vegetables softens their fibers, making them far easier to digest than raw versions. This allows you to absorb vitamins and minerals without shocking your system.
  • How to serve: Opt for soft, cooked starchy vegetables like potatoes and carrots, or steamed non-starchy options like zucchini and summer squash.

Lean Proteins

  • Why it works: Protein is essential for muscle repair and provides sustained energy, helping you feel full longer and preventing overeating. Lean proteins are less taxing on the digestive system than fattier cuts.
  • How to serve: Eggs are a nutritional powerhouse that provides protein and vitamins in an easy-to-digest form. Fish and skinless chicken breast are also good choices.

Foods to Approach with Caution

While many foods are healthy in general, some should be avoided immediately after a 20-hour fast to prevent adverse side effects.

High-Fat and Fried Foods

After a fast, a large intake of fatty foods can overwhelm your system and cause digestive upset, including cramps and diarrhea. Save the greasy cheeseburgers, fatty meats, and rich desserts for later.

High-Sugar Foods

Eating a lot of sugar immediately can lead to a rapid blood sugar spike, followed by a crash, causing fatigue and intense cravings. Opt for naturally occurring sugars in small amounts from sources like fruit or dried dates instead of sweetened juices, candies, or desserts.

Excessive Raw Fiber

While fiber is a crucial part of a healthy diet, introducing a large amount of raw, high-fiber food can be difficult for a resting digestive system. This can cause bloating and discomfort. Gradually incorporate high-fiber foods back into your diet as your system readjusts.

Sample Meal Plans for Breaking a 20-Hour Fast

Here are some examples of what your first meal might look like:

  • Plan 1 (Liquid-focused start): Start with a cup of warm bone broth. 30 minutes later, have a simple smoothie with coconut water, a ripe banana, and a handful of spinach. Your main meal can follow an hour later.
  • Plan 2 (Nutrient-dense start): Begin with a small bowl of simple vegetable soup. After waiting, enjoy a small serving of scrambled eggs with a side of steamed zucchini. A small portion of watermelon or berries can be a refreshing follow-up.
  • Plan 3 (Balanced restart): Start with a glass of water infused with lemon. After a short wait, eat a small portion of plain Greek yogurt with a few berries. An hour later, enjoy a baked salmon fillet with some sweet potato mash.

Comparison Table: Best vs. Worst Foods to Break a Fast

Feature Best Foods (Easy to Digest) Worst Foods (Hard to Digest)
Digestion Impact Gentle and soothing Overwhelming, can cause bloating and cramps
Blood Sugar Stable, prevents rapid spikes and crashes Rapidly spikes and then crashes, causing fatigue
Nutrient Repletion Replenishes electrolytes and vital nutrients gradually Often low in nutrients, providing empty calories
Satiety Protein and balanced macros promote fullness Quick-digesting sugars lead to more cravings
Example Foods Bone broth, smoothies, cooked eggs, steamed vegetables Greasy fast food, sugary drinks, raw high-fiber vegetables

Staying Hydrated is Key

Staying well-hydrated is paramount throughout the fasting period and especially when breaking it. Hydration is essential for nearly every bodily function and is often depleted during a fast. Beyond plain water, which is always necessary, consider these options:

  • Coconut water: Replenishes electrolytes naturally.
  • Herbal tea: Helps soothe the digestive system and provides hydration without caffeine.
  • Water with lemon and a pinch of salt: A simple way to restore electrolytes and rehydrate effectively.

Conclusion: Listen to Your Body

Ultimately, there is no single "best" food for everyone, as individual needs and sensitivities vary. However, the consistent advice is to listen to your body and adopt a low-and-slow approach. Start small with liquids and easy-to-digest, nutrient-dense whole foods like bone broth, simple smoothies, and cooked lean proteins. Avoid overwhelming your system with heavy, fatty, or sugary foods, and gradually reintroduce more complex items as your body adjusts. This mindful refeeding process ensures that you maximize the benefits of your 20-hour fast while preventing discomfort and supporting long-term digestive health. For more detailed guidance, consider consulting an expert or referencing authoritative sources on mindful refeeding.

Mindful refeeding strategies

For additional resources and strategies on balancing glucose after fasting, consider exploring resources from nutritional experts. How to Break Your Fast Without Messing up Your Glucose offers valuable insights into mindful eating post-fasting.

Frequently Asked Questions

The very first thing you should consume is a glass of water or a low-sodium bone or vegetable broth. This helps to rehydrate your body and gently prepare your digestive system for food.

A simple smoothie is a good option because the ingredients are already blended, making them easier to digest. It allows for a quick delivery of nutrients without overworking your digestive system.

It is not recommended to eat a large, regular meal immediately. Doing so can cause digestive distress, bloating, and stomach cramps as your digestive system needs time to reactivate.

You should avoid fried and fatty foods, high-sugar foods and drinks, and excessive amounts of raw, high-fiber vegetables. These can cause digestive issues and blood sugar fluctuations.

After starting with simple, easy-to-digest foods, you can gradually introduce more complex items like whole grains or legumes in small portions. It is best to wait an hour or two after your initial meal to gauge your body's tolerance.

Protein is important because it helps prevent muscle breakdown, provides sustained energy, and promotes a feeling of fullness, which helps prevent overeating.

If you experience digestive discomfort, it's a sign that you may have introduced food too quickly or chosen the wrong items. Next time, stick to even lighter options like broth, reduce your portion size, and reintroduce foods even more slowly.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.