Jogging can help in maintaining a relatively flat stomach during pregnancy by engaging your core muscles and supporting overall fitness. However, it's important to understand that during pregnancy, your body undergoes various physiological changes, and a completely flat stomach might not be achievable or even advisable. Jogging can help in toning your abdominal muscles, improving posture, and reducing excess weight gain. It's crucial to focus on overall health and well-being rather than solely aiming for a flat stomach. Consult with your doctor and listen to your body's needs.