Tis a maxim tremendous, but trite: And you'd best be unpacking the things that you need To rig yourselves out for the fight.
The advantage of eating a low-carbohydrate fruit is that you can consume a larger portion. But whether you eat a low-carb or high-carb fruit, as long as the serving size contains 15 grams of carbohydrates, the effect on your blood sugar is the same.
A diabetic should eat two portions of fruit a day (a non-diabetic can have 2-4 portions). A portion of fruit is the size of a tennis ball. That means that if you eat an apple, it should be about the size of a tennis ball.