As the saying goes, "Smile and you will be ten years old." It can be seen that laughter is healthy for the body. Laughter is a sign of health, and happiness makes people live longer. Faraday, a famous British chemist, often suffers from headache and insomnia due to long-term intense work. Once, he went to see a doctor, and the doctor gave him a proverb: "A clown is better than a doctor when he goes to town." Faraday realized the secret of this sentence and often went to see comedies, circuses and funny performances. Soon, his health improved obviously. There is no doubt that laughter can make people healthy. This is because laughter can expand people's lungs, increase people's breathing ability, accelerate blood circulation and promote endocrine activities. Being happy will increase appetite and digestive juice. It can also relax muscles and eliminate physical fatigue.
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