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.
Celery is one of the very low calorie herbal plants. Its leaves carry only 16 calories per 100 g weight and contain lots of non-soluble fiber (roughage) which when combined with other weight loss regimens may help reduce body weight, and blood cholesterol levels.