Radishes: This is another red vegetable that you should include in your diet. Radishes are high in Vitamins E, A, C, B6, and K as well as potassium and phosphorous, magnesium, copper, calcium, iron and manganese. Some these nutrients play a key role in keeping your immune system and nervous system up and running. Eating radish may help reduce exhaustion, protect cells against oxidizing stress and even prevent certain cancers.