A lot of people ask me how they can lose weight. Mostly they ask me what kind of exercise they can do to get rid of fat. They ask if sup ups or crunches are better for losing stomach fat. Well, sit ups are a no go these days in general because they are not very effective and they can be bad for your back and neck. Most important, they don't burn stomach fat. But neither do crunches, or planks, or cardio even!