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Alternatively, You could eat breakfast early, say 6am, and have dinner at 8pm and skip lunch (i.e. just have a banana or apple). That's something I have kind of been doing and it's working well.

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A banana or apple for lunch isn't fasting. Fasting is, in most circles, the exclusion of caloric intake. Some would suggest that it's the specific exclusion of calories and anything that triggers an insulin response in the body, but that's debatable.

Not debatable though is if eating an apple for lunch means you're still fasting; you aren't.

History, the term "fasting" is often used to mean the reduction of food, omitting or only eating specific foods, or eating at only specific meals.

If you're interested, the wikipedia page has several examples:

https://en.wikipedia.org/wiki/Fasting

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