The old man thinks that one of the healthy exercises is walking backwards. Many elderly people like to walk backwards in the morning, but because of their low cardiovascular storage capacity, it is easy to increase the cardiovascular burden. Walking backward is prone to neck rotation, which leads to carotid artery compression and greatly reduces blood flow. If you insist on walking backwards for a long time, it is easy to have symptoms of brain hypoxia. When you turn your head, some old people may suddenly faint on the ground. Of course, if you only walk backwards occasionally, it won't have much impact on your body, but if you do this for a long time, it will do great harm to your body.
Excessive deep breathing is not good for patients with hypertension and coronary heart disease. Hypertensive patients and patients with coronary heart disease symptoms may cause cardiovascular contraction if they take excessive deep breaths, which may pose a great threat to life and health in severe cases. Symptoms such as cerebral hemorrhage and myocardial infarction are closely related to deep breathing. Don't always take deep breaths. Deep breathing is a wrong way to keep fit.
Supplement the body's salt after fitness. Many people like to drink salt water in summer. They believe that drinking salt water can replenish the energy lost by the body and play a role in fitness. In fact, this method is wrong. Generally speaking, we constantly sweat and breathe during sleep and consume more water. Waking up in the morning is easy to dehydrate, which makes people feel thirsty. Drinking salt water at this time will have a great influence on your health. Therefore, don't drink salt water during exercise. You can drink some boiled water.