At age 14, the Achilles tendon may continue to grow, and moderate exercise on a daily basis can help with height and Achilles tendon growth. At the age of 14, adolescents are usually in puberty, and the Achilles tendon may continue to grow. Since they are in the process of development, adolescents can often do some exercise, for example, to help the Achilles tendon grow. However, when exercising, it is important to control the strength and avoid overdoing it, as too much exercise may lead to Achilles tendon injury, causing pain, swelling and other symptoms, and even affecting daily walking. Children at the age of 14 are generally in puberty and will generally grow in height, and the length of the Achilles tendon will change as their height grows. It is advisable to consult a specialist for any growth problems your child may have to ensure normal growth and development.