Several factors contribute to our overall height. Right from your diet to genes, everything has a role to play in determining your final height when you grow up. Your genes account for only 60 to 80 per cent of your height and you cannot control it. But you can control the remaining factor that contributes to about 40 to 20 per cent of your overall height. From age 1 and puberty, most people grow 2 inches taller every year. After hitting puberty, it increases at the rate of 4 per cent till you reach the age of 18 years. Growth after this period slows down or completely stops. It makes many people wonder, especially those unhappy with their height, if it is possible to gain height after puberty. The answer is yes. You may increase your height by a few inches by making some simple changes in your routine.