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.
Cut calories with these foods. Have you ever heard the theory that certain foods have a negative caloric effect, meaning they burn more calories during the digestive process than they contribute? (Celery and apples are often cited as examples.) Turns out the negative calorie theory is a myth.