1. Common problems. With the increase of age and the loss of muscles, our posture and joints will be more or less problematic. The most obvious are middle-aged hunchback, pelvic forward tilt, low back pain in the elderly and knee joint problems. Correct and scientific strength training can obviously improve and alleviate these problems. The principle behind it is that strength training mainly solves the imbalance of muscle strength, reactivates weak muscles, enhances their muscle fiber strength level, and relaxes tense muscle groups by means of relaxation and stretching. In this way, after a long period of practice and re-establishing the recruitment relationship of neuromuscular, the posture and muscle strength of the human body will be strengthened to a certain extent, thus improving the weak links.

2. The problem of osteoporosis. The strength of bones is determined by the external physical stress on bones, that is, only when the bones are subjected to a certain force, resulting in slight deformation or bending of the bones, will the bones' demand for nutrition be stimulated. At this time, a certain amount of calcium can be supplemented, which can improve bone density and strength. Of course, from the perspective of increasing bone density efficiently, strength training and sufficient calcium are not enough, and other richer nutrients are needed. In modern society, due to serious lack of exercise and sedentary, the external pressure on the body will be much less. If the stress is less, the human skeletal system will not have so many nutritional needs. In this case, no amount of supply is meaningful.

3. Don't be eager for quick success. In order to lose weight, they want to change the status quo through physical exercise. A month later, I found that my physical condition had not changed significantly, so I complained that exercise was not omnipotent and simply gave up physical exercise. Avoid persistence: Exercise is long-term, not one-off. In the past, some old people spent a long time in the chess room, sitting for half a day or even longer. Feel unwell, go to the hospital for examination. The doctor told me to strengthen physical exercise and build up my physique, and then I worked hard. After a few days, I felt unaccustomed and tired, so I stopped exercising, which led to all my previous efforts in vain. This is what people often say: three days is fresh.