Introduction: Fruits not only can provide essential vitamins and water to the body, but can also enhance the resistance of the body. Spring is the season when people are more vulnerable to various kinds of diseases, so you should eat more of the following five kinds of fruits, which can help improve the immunity and resistance of your body.

1. Banana
Banana can help those sentimental people to disperse the pessimistic and irritable emotion, and keep a calm and happy mood. This is mainly because it can increase the level of serotonin in the brain, and this substance can bring people great pleasure. Study has found out that, compared with normal people, patients with depression have less serotonin in the brain.

2. Pear
Pear is a fruit which can make people dynamic and energetic. It contains sufficient water, and is rich in vitamin A, B, C, D, E and trace element iodine. It can maintain the healthy state of cells and tissues, promote the detoxification and purification of the organs, soften the blood vessels, as well as promote the blood to transport more calcium to the bone.

3. Orange
Frequent emotional instability will increase the risk of and heart disease, high blood pressure and stroke. Experts from Harvard Medical College recommend that people can often eat oranges to reduce the probability of these diseases. However, note that do not eat more than 4 oranges every day, or it may bring too much heat to the body, and lead to symptoms such as aphtha.

4. Grape
Grape is particularly suitable for "lazy" people eat, because the healthiest way is to eat grapes with the skin and seeds together. Grape skin and grape seeds are more nutritious than the grape pulp. The reason why the health-care effect of red wine is better than that of white wine is because red wine is fermented with the grape skin. Researchers at the University of Bordeaux in France also find out that, grape seeds contain a high content of OPC, which can enhance the immunity and delay the aging process. What's more, after the OPC enters into human body, 85% can be absorbed and utilized by the body.

5. Cherry
Cherry is rich in iron, so it is particularly suitable for women who suffer from iron-deficiency anemia. In addition, U.S. researchers also find out that, eating cherries can significantly eliminate the painful feeling.