What are the best foods or fruits to increase your metabolism?Thank you?

Grapefruit and exercise!

if you are active then aloe vera juice, Red hot peppers, grapefruit, garlic, cinnamon, honey, lime/lemon, vinegar

Acai, green tea. If you keep your house colder it also increases your metabolism. Peanut butter is a good diet food despite the fat, because it's good fat and it really curbs your hunger. Have two spoonfuls on a rice cake for breakfast with some fruit and yogurt or a smoothie instead of breakfast cereal.

exercise will increase (or change) your metabolism, foods do not "increase" your metabolism, although the wrong foods can give you constipation or diarrhea.

I think spicy foods help boost your metabolism too, try that...