The short answer is no, but of course, it depends what your goals are. The beauty of the challenge is that YOU pick whatever fruits and vegetables you want to hit the 800-gram target.
I’ve done the challenge for more than a year and a half (not being 100% perfect), and I’ve taken data on two month stretches. In BOTH 30-day stretches of mixed fruits and veggies, I averaged ~110g/carbs per ~900 grams (which ends up being <100 carbs if I stopped at 800g). This includes days with bananas, potatoes, or plantains, which are the most carb-dense items. Fruit is actually a lot less carb-dense or sugary than some in the blogosphere have suggested. See a couple example days below of gram and carbohydrate totals.
Targeting low carb items (e.g., greens, celery, cucumber) will be ~40g carbs and biasing high carb items (potatoes, bananas, yucca) will be ~200g carbs. A plate of >1,000g of fruit is only 140g carbs! Pick the items that suit your needs.
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