? ? As far as physical strength is concerned, "exercise" is any kind of strenuous exercise that will make you panting and sweating. If you have enough activities, gardening or walking is the same as playing tennis or riding a bike for an hour. Can achieve the same sports effect. Physical exercise is good for health, which is absolutely based on medical science. Any work that acts on muscles will increase the oxygen demand of muscles. When doing physical exercise, you must take a deep breath and let more oxygen enter your lungs. Your heart (the heart itself is almost entirely a muscle) must beat faster and more violently to deliver blood to the muscles.
? In North America, about13 of the dead died of heart disease, which is also among the best in serious diseases. Therefore, compared with people who don't exercise, if you have an efficient, lively and elastic heart (not to mention a strong lung), then your health is unlikely to be serious. According to a medical research report, middle-aged people who sit in the office and don't exercise are twice as likely to suffer from heart disease as those who exercise regularly.
Within a proper range, the more times you use muscles, the more muscles and joints you use, and the more benefits your body will get. The most beneficial exercise for your body can strengthen your heart, lungs and body muscles when you are short of breath and sweating. It can also make your joints soft and make your body and mind lively. Another kind of exercise is called "static exercise" (such as weightlifting). Static exercise makes some muscles too strong, which is not very good for enhancing cardiopulmonary function, and may not necessarily improve your strength. ?