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.
Most people eat celery stalks, either raw, boiled or baked. One serving of celery contains 18 calories, 2 grams of fiber and 1 gram of protein. It is fat-free and low in sodium. It meets 40 percent of the U.S. Recommended Daily Allowance of vitamin K and 10 percent of vitamin A and folate.