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.
Considering a moderately active man weighing 175 pounds burns about 2,800 calories per day, and 125-pound female burns about 2,000 calories per day, carrot and celery sticks contribute just a trivial number of calories in the average diet.