Q: how namy calories does a crunch burn no one can tell me the exact number please help!

A: The reason nobody can tell you the exact number is because it's pretty much irrelevant. Counting calories is a poor way of losing fat, especially when it comes to resistance exercise (such as crunch or pushup or any weight lifting) since the idea behind resistance exercise is to burn fat AFTER the exercise is over while muscles are recovering. So I'm not going to be able to give you a number either.

Instead of adding up all the calories you eat verus all the calories you 'burn', you'd lose the unwanted fat much better by setting up a good fat-burning diet for yourself and doing heavy whole-body weight training. Everything you need is described in my fat-loss article. Read it carefully and follow its directions to find the optimal diet and exercise routine for yourself. Good luck!