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.
A 1-cup serving of chopped celery contains just 16 calories and no fat and is rich in certain vitamins and minerals. Celery might also prevent certain chronic health conditions. Look for light green celery that is crisp and firm because it has the most nutritional value.