Fitness is a very good exercise, which is beneficial to physical and mental health. However, everything has advantages and disadvantages, and fitness also has many disadvantages. If the intensity of fitness is too high, it will do harm to the human body, ranging from exhaustion to worrying, even worrying about life. So the safety of fitness is very important. If I practice heavy traction during fitness, it is beyond my ability, and it is easy to cause muscle strain and lumbar disc herniation, which is very troublesome and even disabling. So you can't practice heavy traction for a long time.

An important item of fitness exercise is to practice muscle strength, mainly including the muscle strength of the back and upper and lower limbs. If the exercise intensity is controlled reasonably, the muscles will be strong and the whole body will feel much stronger after fitness. However, if you use heavy traction when practicing muscles, it is easy to hurt your waist, because the waist is often hard with muscles in other parts of your body, so it is easy to involve strain. When strenuous exercise hurts the waist, it is not worth the loss, so it is unnecessary.

Lumbar disc herniation is also very common in life. After degeneration, the nucleus pulposus of the lumbar disc is pulled by external force, which leads to the rupture of the fibrous ring of the disc and the prolapse of the nucleus pulposus, which compresses the adjacent spinal nerve roots, thus causing symptoms such as low back pain and numbness of the lower limbs. Lumbar disc herniation often occurs in the case of large physical activity momentum and excessive physical consumption. Since the consequences of lumbar disc herniation are so serious, don't do high-intensity fitness again, which is artificially caused.

Fitness is a good thing, but fitness safety is also a top priority. If fitness endangers health or even life safety, it shouldn't. Pay attention to the training intensity and your own ability when exercising, don't exceed your own ability too much, and be careful not to be injured by equipment.