Ok, they say that celery has "negative calories" because you burn more calories by eating it than it has to begin with. So when you say something else has "150 calories" is that 150 going in WITHOUT considering how many calories you burn by eating it; or is it 150 calories AFTER the subtraction of those calories that are burned off by eating?
And if it's the former, then why don't we just talk about celery in terms of how many calories it ACTUALLY has, just as we'd talk about how many calories something else has?
And how many calories DOES celery actually have?
...and what's the singular of "calories"? calory or calorie?