The first is good cardiopulmonary function.
The heart and lungs are the main internal organs. A healthy heart, with well-developed myocardium and large heart capacity, can discharge 80- 100 ml of blood per beat, which is 20-30 ml more than the average person. Because the human body needs a certain amount of blood in a certain period of time, when the blood output of a heartbeat increases, the number of heartbeats will decrease. Generally speaking, the slow heartbeat is a good phenomenon, which can make the heart rest for a long time after beating, and it is not easy to get tired. You can reserve your physical strength for physical labor, and even if you are responsible for heavy physical labor, you will not feel uncomfortable such as palpitation and dizziness due to tachycardia.
Healthy lungs have larger vital capacity than the general population, better lung gas exchange, developed chest, strong respiratory muscles and slow and deep breathing. Breathing 10 times per minute can meet the body's demand for oxygen. This efficient and labor-saving breathing method can prevent respiratory organs from overworking and respiratory diseases.
When the heart function, liver, gastrointestinal and other internal organs have strong blood circulation and sufficient nutrition supply, they are also in a healthy state.
The second is good growth and development.
A healthy person's body is well developed, which is characterized by tall, well-proportioned, muscular and strong limbs.
Two people of the same age, if this person's height, weight, chest circumference, poor breathing, vital capacity, grip strength and jumping ability are higher than that person, it means that this person is healthier than that person.
Of course, physical development is also related to region, heredity, race and nutrition. , and can't judge from this aspect alone.
The third is good physical fitness.
People's labor, sports and various movements in daily life are all different forms of muscle movements dominated by the nervous system. The differences in strength, speed, endurance, agility and flexibility of muscles can reflect the functions of human nervous system and internal organs. So it is also an important sign of health.
Healthy people have big muscles and great strength, which can account for 40-50% of their body weight.
The fourth is the good function of the nervous system.
The brain is the master of the body and directs all activities of the body. Whether it is work, study, thinking, judgment or all aspects of daily life, it is dominated by the brain.
Eating well at ordinary times, sleeping soundly, no headache and insomnia, and high work efficiency are undoubtedly a healthy performance.
Fifth, it has strong adaptability and disease resistance to the external environment.
The outside world is constantly changing, and the human body must adapt to various changes in the external environment. When the outside temperature rises, the body radiates heat through the expansion of skin capillaries; When the outside temperature drops, the body generates heat through muscles, and skin blood vessels contract, reducing heat dissipation to maintain body temperature balance.
Healthy people are not prone to heatstroke in hot weather and catch a cold in cold weather. The human body's resistance to infectious diseases is the same. Healthy people have many antibodies in their blood, so they are not easy to get infectious diseases in the same environment.
Scientific research has proved that although a person's health is related to congenital inheritance, it is acquired exercise that plays a decisive role. Some people are in good health when they are young, because if they don't take part in exercise, their bodies will slowly collapse; Some people are weak, but they will gradually get healthy through exercise. This reminds us that no matter how healthy we are now, as long as we take part in exercise, we will be healthier.