SHARE SHARE TWEET EMAIL. The key to reducing fat above the belly button is to strength train the entire abdominals and obliques targeting the upper abs and to do cardio to reduce excess fat.trength Training. Crunches and their variations give a highly effective abdominal workout. To do a standard crunch, lie on your back with your knees bent and feet flat on the ground. Place your hands at either side of your neck, lightly touching.