This tip won’t actually help you burn belly fat, but it will go a long way in making your belly smaller. Slouching will make your belly bigger or give you a belly, even if you have little belly fat. Good posture is slimming as it pulls you in. Your ears should be aligned over your shoulders, your shoulders over your hips, your hips over your knees, and your knees over your ankles. Your shoulders should be open and your belly button pulled into your spine. Read more about posture.