Which exercise is best for height increase? How can I grow 6 inches taller? How to Grow Taller and taller? Height increase exercise is an application that helps you improve your height. With this app you can do simple exercises that increase height in 42 days and reach the stars. In this version of height fitness app we have two different workout plans for before and after 19 years old. * Height Increase workout plans - Workout plan for under 19 years old and over 19 years old - Height increase