Do you burn more calories digesting a cucumber than there are calories in a cucumber?

No, you do not burn more calories digesting a cucumber than there are calories in it. Cucumbers are very low in calories, containing about 16 calories per 100 grams. The energy expended during digestion, known as the thermic effect of food, is typically around 10% of the calorie content, which means you would burn only about 1-2 calories digesting a cucumber. Thus, you would not burn more calories than the cucumber contains.