1. The benefits of running in the morning. Weight loss: Morning running is an aerobic exercise, which can improve the basal metabolic rate of the body, accelerate the burning of body fat, and play a good role in weight loss. Refresh my mind: Many people are still in a groggy state after getting up, and the whole person is listless. Morning running can breathe the fresh air outside and play a refreshing role. Exercise heart and lung function: Morning running can increase the combination of oxygen and blood, improve breathing frequency and help exercise heart and lung function. Strengthening bones: On the one hand, morning running can increase the bone density of femoral joints and leg bones, on the other hand, it can also promote the absorption of calcium by the body, which has a good effect on strengthening bones and preventing osteoporosis.

2. The disadvantages of running in the morning. Increase the risk of respiratory diseases: the concentration of carbon dioxide in the air is relatively high in the morning, especially in foggy weather, with poor air quality and high content of harmful substances. If you run too early, you will increase the risk of respiratory diseases. It is easy to cause hypoglycemia: if you run on an empty stomach in the morning, it may cause hypoglycemia, causing dizziness and syncope. Increase the risk of thrombosis: there are more platelets in human blood in the morning, so human blood is sticky. Running in the morning will increase blood viscosity and increase the risk of thrombosis.