So the first thing to understand is that you can’t spot-target an area to lose weight either for the abs or for any other body part. In other words, you can’t do 1,000 sit ups a day and think you are going to lose weight.
The fallacy of spot-reduction assumes that, if you have fat over your abs, then exercising the ab muscles will make that fat go away. While exercising the muscle may increase endurance or strength, it won't burn off the fat in that area. The only way to burn fat from your belly is to reduce overall body fat with consistent exercise (cardio, weight training, and flexibility) and a healthy, low-calorie diet.
Simply put, if you are carrying too much fat around your waist, it means you have consumed more energy, i.e. food, than your body needs. What the body doesn’t need, it stores as fat. Some people store it around the abdominal area, others the hips, back of the arms etc. Unfortunately, once the fat is there it is hard to lose because it is the last energy source your body utilizes. So if you want to lose weight, here are a few tips to start off:
1. 2/3 resistance workouts a week
2. 2/3 cardio sessions per week
3. 5 small meals a day
4. Regular sleep5. Plenty of water