Does cardio exercise help burn fat?

Only if eating less!: Any form of exercise burns calories, so if one does not eat or drink more calories than he is using during his exercise, then his body will burn up fat as fuel. However, if a person drinks a large orange juice (about 300 calories) while exercising, and exercises away only 200 calories, he will still get fatter even though he is exercising!

Aerobic does!: Aerobic exercise is exercising for an extended period of time (20 min or more, nonstop) at a moderate level (3-5 on a 0-10 scale). What many call "cardio" may be at too high a level. If the 'cardio' is aerobic (as above) then yes, you burn fat! remember to stay hydrated. If you are dehydrated the body doesn't burn fat and you can burn your own muscles when you exercise. Hydrate+aerobic=good.