moderato. adv. 1. (Music, other) at a moderate tempo. 2. (Music, other) (preceded by a tempo marking) a direction indicating that the tempo specified is to be used with restraint: allegro moderato.
While celery is a very low-calorie food, it likely doesn't provide you with negative calories. Mayo Clinic suggests that while it's theoretically possible for negative-calorie foods to exist, there are no reputable scientific studies that prove certain foods cause negative calorie effects.
Crunching the Numbers. A 3-inch carrot stick contains 3 calories; a 4-inch celery stick contains just 1 calorie. If you're slicing your own sticks at home, count 25 calories per medium carrot and 6 calories per medium celery stalk.