Thanks for writing to us.
At 19 years of age, most of the long bones of the body have reached their mature size. It is very difficult to increase the height now with the help of supplements like step up. Regular aerobics
can help you.
I hope this information has been both informative and helpful for you. You can consult me again directly through my profile URL http://bit.ly/Dr-Praveen-Tayal
Dr. Praveen Tayal