Hello, everyone has different opinions about morning strength exercise on an empty stomach. This is a fact. Such as soldiers, athletes, office workers, students and so on. They all exercise in the morning. From the health point of view, it is not good to exercise on an empty stomach in the morning, because at night, due to the photosynthesis of plants in one day, a lot of oxygen is released, which is beneficial to aerobic breathing of muscles and health. In the morning, the air releases a lot of carbon dioxide because of the overnight breathing of plants, even the sun. There are also people's physical problems, that is, ordinary people exercise on an empty stomach in the morning, and their blood sugar is low, which will aggravate hypoglycemia after exercise. In addition, after overnight metabolism, the blood volume is also low, and the increase of blood concentration and viscosity is easy to induce hypotension, which can indirectly cause brain hypoxia and even cerebral thrombosis.

Most people are not suitable for exercising in the morning, especially some patients with chronic diseases. The best fitness time is between 3 pm and 9 pm. For some patients with cardiovascular and cerebrovascular diseases such as hyperlipidemia, cerebral thrombosis, heart disease, etc., 4 am to 10 am is called a black time period, because during this time period, due to the body's metabolism, there is less water in the body and blood is sticky, which is easy to induce periodic hypertension, hyperlipidemia, thrombosis, exercise-induced myocardial infarction and cerebral infarction. These people had better exercise after 3 pm when they are in excellent physical condition.