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Rating Newest Oldest. Best Answer: 8 to 10 hours is considered FASTING. You should be testing BEFORE each meal, and then again TWO HOUR after each meal. If you are under control, the FASTING reading (first thing in the morning, before breakfast) should be low-normal, like 80-100.
1 A typical intermittent fasting strategy is to restrict your daily eating to a specific window of time, such as a six to eight-hour span from around 11am to 7 pm.