The Achilles tendon may grow gradually with age. The Achilles tendon is the triceps muscle of the calf, which is very important for walking and standing, etc. If the Achilles tendon is relatively short, it is likely to lead to weak coordination of the lower limbs, and easy to trip and fall when walking, which may even affect the normal life. The length of the Achilles tendon is related to many factors, such as genetic factors, nutritional factors, but also may have a lot to do with the acquired sports, with the growth of age, coupled with the usual physical exercise, may stimulate the development of bones and joints, resulting in the Achilles tendon properly longer. It is recommended that people with shorter Achilles tendon should pay attention to do more physical exercise in normal times, but should do a good job of warming up before exercising, and avoid strenuous exercise, so as not to cause Achilles tendon injury.