Your height is largely determined by both your genetics as well as environmental factors. Although several factors that determine your height are out of your control, there are a few things such as your height stays the same. Once your growth plates have closed, your height remains the same. Before that window has closed, however, you can use the following techniques and exercises to reach your full potential. What you do when you're young will likely affect how big and tall you grow to be. While none of these steps can ensure you grow tall, having a healthy, low stress lifestyle will increase the odds you reach your maximum potential height.