If you are following a sedentary lifestyle then give it right away and eat these healthy foods which will help you to boost your immunity fight infections keep away fatal health ailments like diabetes heart diseases high blood pressure at bay. Get going now! You can opt for yoghurt: For your well-being you will have to keep your gut in a good shape. A leaky gut can cause indigestion poor immunity irritable bowel syndrome (IBS) and other health ailments. Yoghurt also known as curd is a good probiotic which can enhance your gut activity and soothe your inflamed digestive systems.