Aerobic exercise can also reduce the heart rate at rest, but aerobic exercise alone can't improve your heart's ability to transport blood when blood vessels are compressed, which is exactly what happens when muscles contract strongly. Contracted muscles will squeeze blood vessels and hinder the smooth flow of blood, which is why some people with good aerobic capacity will also have health problems when carrying heavy objects.
Strength training can make up for this deficiency and improve the heart's ability to deliver blood to muscles when blood vessels are compressed. This improvement can also make the body continue to burn more fat after exercise, and avoid the hard-won bonus of muscles being consumed as energy.
Extended data
The purpose of aerobic exercise is to enhance cardiopulmonary endurance. In the process of exercise, due to muscle contraction, a lot of energy and oxygen are needed, and the demand for oxygen increases. The number of heart contractions, the amount of blood pumped out each time, the number of breaths and the degree of lung expansion all increase.
Therefore, when the exercise continues and the muscles contract for a long time, the heart and lungs must strive to provide oxygen to the muscles and take away the waste in the muscles. And this constant demand can improve the endurance of the heart and lungs. With the increase of cardiopulmonary endurance, the body can engage in longer or higher-intensity exercise, and it is less likely to get tired.
The combustion of gasoline is inseparable from oxygen, so we can also call the work of the engine aerobic exercise. Similarly, human beings burn fuel when they exercise. The "fuels" of human beings are sugar, protein and fat. These "fuels" of mankind are stored in human cells. When you exercise, you will consume these "fuels" to gain motivation.
Baidu encyclopedia-aerobic exercise