Paul Jaminet recommended to have like 3 bananas everyday with 2 tomatoes and 2 potatoes for my fatigue (potassium deficiency maybe he said). So yesterday I ate 3 bananas. Today I woke up nice, more energy and all.
I'm also probably one of the guys who can handle a lot of fruit and carbs. Bear in mind that when I say 5 sweet potatoes I'm talking about 5 medium sweet potatoes, not those huges ones. My combined meal (lunch) was probably 1500 calories, with the meat, veggies, whey and strawberries, so... yeah.