I don't think there is a one-method-fits-all exercise plan as everyone's body is different and will respond differently to different types of exercise. That being said, some common exercises that can help you achieve abdominal muscles include crunches, planks, sit-ups, and Russian twists. However, it's important to note that you won't see any real changes until you start incorporating resistance training into your routine. Resistance training can help you build muscle and strength in your abdominal region, which will then help to make your abdominal muscles look more pronounced.