The goal for a day of energy maintenance is to supply the body with a plentiful energy supply early and taper off as the day progresses. Water is essential in preventing fatigue, especially during exercise. Do not wait until thirsty to increase liquids. Caffeinated drinks actually make the body lose fluids. Iron is important for women.
Low iron is a common cause of fatigue.
Foods high in iron content include lean meat, dried beans, dark green leafy vegetables and dried apricots. Experts recommend eating something nutritious every four hours. Combine sweets with a complex carbohydrate, like jelly with a bagel, for a double whammy.