Often people are curious about how to grow taller. This question has often found place in various discussion forums. This has brought in numerous manuals that say you will grow three to four more inches following certain techniques. Some even commend wonder pills that claim to make you taller. But the fact is that is no secret method or any wonder pill that can make you grow or increase height if your growth plates are closed. Closing of growth plates leads to stunting growth of your bones. Usually, this occurs at an age of 18 to 21 in boys and 16 to 18 in girls.
Source @ Growth on Height