Within the 70 calories of a medium-sized orange, there are16 grams of carbohydrates. During physical activity, the muscles use stored carbohydrates, called glycogen, to fuel daily activity. Oranges are also a good source of fiber, which keeps the intestinal tract healthy and eating some of the spongy-white pith of an orange helps increase fiber intake. Orange juice can improve digestion because it is rich in salts and acts as a stimulant to the digestive system by improving peristaltic activity and the flow of gastric juices in the colon. It is recommended that one should drink a glass of orange juice one hour before breakfast.
Oranges can also help soothe a feverish person.
Fresh orange juice in a baby's bottle can prevent scurvy, pellagra, rickets and infantile paralysis in situations where the child is not getting adequate nutrition. Peel and cut an orange into small pieces and dress in a mixture of the juice of two oranges, one lemon and two tablespoons of orange blossom or rose water. Stir in chopped fresh coriander leaves. 375g sugar and 1 tablespoon of orange blossom water. If you like a slightly acidic taste add more lemon juice.