If the epiphysis is not closed at 18 years old, you can make moderate improvements such as adjusting work and rest, balanced nutrition, sun exposure, and moderate exercise. 1. Adjusting work and rest: Regular work and rest, and maintaining sufficient sleep, is conducive to the secretion of growth hormone during sleep, which in turn helps to grow taller, so it is beneficial to maintain sufficient and good sleep for the growth of the body. 2. Balanced nutrition: Ensure balanced and sufficient nutrition, vitamins, carbohydrates and proteins should be balanced intake, eat more meat, eggs, milk, fruits, vegetables and so on, help to grow taller. 3. Sunbathing: moderate sun exposure can promote the body’s production of vitamin D, which is conducive to growing taller. 4. Moderate exercise: Keeping a moderate amount of exercise every day, such as jumping in place, running and jumping, etc., can stimulate ligaments, joints, and bone growth. Moderate exercise can not only promote the body to grow taller, but also help to strengthen the body. The growth of the human body is the result of a combination of factors, so we need to start from a variety of factors, multiple ways to promote the growth and development of bones.