Fibrous foods like celery and whole wheat take more energy to digest, so you'd actually wind up with less energy from a 100 calorie serving of celery than a 100 calorie serving of potato chips.

纖維性的食物像是芹菜和全麥，都需要更多的能量能消化。所以，其實你吃100卡路里的芹菜所攝取的能量會比100卡路里的洋芋片來得少。