Is there any way to increase height after 19 years of age?

actually yes i have a friend who is sixteen he grew like 5 inches in 4 months(summer)now he is 17 LOL. i just started yesterday by the end of the summer i could finely be 6' feet tall people may say other ways but dont forget stress and thinking about height does stunt your height so he gave me a scedual he got from a gym and some protienshakes he garentees it works so whats the trouble of giveing it a try. ummm tips sleep 9 hours exercise dont lift weights do allot of chin ups. people may say its a myth or something but i know its not all genetics the kid is way taller then his dad and his bros