1, avoid cold wind blowing. The cold air of the air conditioner, blowing against the cervical vertebra of the air conditioner, makes the muscles of the neck and back chill, causing persistent neck spasm and back pain. Indoor air conditioning temperature should not be lower than 26℃, shoulders should not directly face the air conditioning, or put on a shawl.

2. Avoid gulping water. Take a big sip of water, and it will quickly dilute the blood, increase the blood volume and increase the burden on the heart. It is especially dangerous for patients with coronary heart disease. Don't drink more than 200ml each time. Warm water is better. Don't wait until you are "thirsty" to drink water. It is advisable to replenish water several times.