Banana is a nutrient-rich fruit that contains a variety of nutrients. It can supply heat to the body. It contains a lot of potassium and magnesium. Potassium can prevent muscle spasms. Magnesium has the effect of eliminating fatigue and helping the brain. The substance of serotonin can make people's moods happy, relieve pain and depression, bananas also have a stagnation and antidiarrheal effect.