How to Grow Taller in a Week Download Article Download Article While taking expert care of your trunk may help you lot abound taller, your summit is mostly determined past your genetics. Once your growth plates are fused together, yous will finish growing taller, which normally happens between the ages of fourteen and xx. [1] If you are still growing, practiced nutrition and a healthy lifestyle may help you lot get taller. Additionally, yous might exist able to increase your peak by most 0.5 to two inches (1.iii to 5.1 cm) past stretching out your spine daily. [2] one