celery is a negative calorie food. it takes more energy to eat, chew and digest celery than the amount of calories it actially has in it. All i know is yogurt cultures are good for digestion. Drinking Ice cold water helps burn calories too because it takes energy for your body to warm the water to your body temperature.
Yogurt, and drinking milk after exercise.
Most vegetables are really good in loosing weight. Lettece peppers cucumbers... All have fiber and water that will fill you up and have little calories. Beans are also really good for the same reason. I like black beans because they feel kinda of starchy like potatoes but don t pack on the calories. Plus they are high in protein and other good stuff. Green tea and coffee along with the veggies and beans are a good way too lose weight assuming you stay off junk and meats and exercise.
Fruits and veggies for sure.
Grapefruit. When I lost 15 pounds I ate a grapefruit in the morning.