Celery's Calories

[Birchy]

Is it true that the act of eating a stick of celery burns more calories than the celery actually contains? If so, are there any other foodstuffs to which this applies?

[hal]

There are only 5 calories per stalk! It is said to have negative calories and is supposed to be the only food that does.

[Toglet]

Only if you chew each mouthful for about 20 minutes......

[darth vader]

only IMHO but i wouldn't say celery is the only one - there are a few foodstuffs which are little/no calories and so would cost more in calories to digest i imagine; cucumber (which is 90 odd percent water) and beansprouts are two that spring to mind immediately