1, growth rate decreases: height growth is an upward diagonal line. When this diagonal gradually becomes smooth, the growth rate is much slower than before, indicating that there will be signs of stopping growing taller;
2. Muscles are getting stronger: Many boys are thinner when they grow up, so parents will try their best to make their children eat more. However, if it is found that the child begins to gain weight, the muscles on his body are getting stronger and stronger, and the muscle lines and contours can be clearly seen, then it may be that the epiphyseal line has begun to close;
3, the development of secondary sexual characteristics: if the boy's secondary sexual characteristics begin to develop, such as prominent Adam's apple, voice change, beard growth and so on. And the facial features are basically stable, which may be that the epiphyseal line is about to close without major changes.