Intermittent Fasting Knowledge Center
Science-backed answers from the book and community.
Editorial articles
13 articles
- food
Can You Eat Fruit on Intermittent Fasting? Yes — 6 Safe, 8 to Avoid
Yes — fruit is fine in your eating window, but any fruit breaks a fast. The 6 low-sugar fruits that are safe, the 8 that stall fat loss, and how much you can eat.
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- food
What Is the Best Meal to Eat Before Starting Your Fast?
The meal before your fast determines how easy it feels. Learn which foods keep insulin low and hunger away so your fasting window starts effortlessly.
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- food
Why You Should Eat Slowly After Breaking a Fast
Eating too fast after fasting can cause bloating, nausea, and stomach pain. Here's why your digestive system needs a gentle reintroduction to food—and how to do it right.
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- food
Does Snacking Between Meals Ruin Intermittent Fasting?
Snacking between meals keeps insulin elevated, blocks fat burning, and undermines your fast — even if the snack is 'healthy'. Here's why it matters.
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- food
Can You Use Coconut Butter During Intermittent Fasting?
Coconut butter during intermittent fasting: does it break your fast? Learn when it helps, how much to use, and what the evidence says about this fasting shortcut.
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- food
Does Protein Powder Break a Fast?
Protein powder breaks your fast — even plain, unsweetened varieties trigger an insulin response. Here's the science and what to use instead for real results.
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What Is Nutritional Yeast and Why Use It During Intermittent Fasting?
Nutritional yeast is a B-vitamin powerhouse that supports energy and focus during fasting. Learn why it's one of the best food additions for intermittent fasters.
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- food
Why Are Keto Products Bad for Intermittent Fasting?
Most keto-labelled products contain hidden ingredients that spike insulin and stall fat loss. Here's why whole food always beats the package when you fast.
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- food
Why Are Sauces and Packaged Foods Bad for Intermittent Fasting?
Sauces and packaged foods are packed with hidden sugars and seed oils that spike insulin and break your fast. Here's why they undermine your progress.
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- food
Are Nuts Good for Intermittent Fasting?
Nuts can support intermittent fasting — but timing and type matter. Learn which nuts to choose, when to eat them, and what the book says about getting it right.
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- food
What Are the Best Fats to Eat on Intermittent Fasting?
Learn which healthy fats support fat burning and keep hunger away during intermittent fasting—from ghee and butter to olive oil and avocado oil.
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- food
Can you take vitamins while fasting?
Learn whether vitamins break your fast and which supplements are safe to take during intermittent fasting periods.
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- food
What should your first meal be after fasting?
Discover the best first meal after fasting to avoid stomach pain, maximize fat loss, and keep energy stable. Smart food choices explained.
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