Collard greens contain 771 micrograms of vitamin A and 34.6 milligrams of vitamin C per 1 cup serving. These antioxidants help to lower the risk of oxidative stress on your cells, which is cell damage that can occur when your nutrient intake is low and when toxic chemicals and environmental pollutants enter your body. Collards also contain 5 grams of fiber per cup and can support the health of your digestive system when consumed regularly. Chop collard greens into small, even pieces to ensure that they cook evenly. Steam collards for 10 minutes or less to retain their nutrients and season them with peppers, chopped onions and your favorite herbs and spices.