Coffee contains caffeine to stimulate the nerves and keep the nerves excited, and in moderation can make the spirit high. Eat beans often, because beans contain protein and iron, can effectively improve the state of fatigue and weakness. Strawberry is rich in vitamin c, and vitamin c helps the body absorb iron, so that the cells get nutrients, therefore, eating more strawberries can make people energetic. There is also tuna, which is high in protein, and it can make people concentrate and think fast. Oatmeal is a fiber-rich food that is satiating and energizing. There is also yogurt, carrots, seafood, leafy greens and fruits that are good for the body’s nutrition.