Hi welco to HCM
I have gone thru your query regarding p90x .
Dear , Your height of 5'9"-10" at your age of 15 is great . Once you have been gifted this ht by mother nature can not be stunted unless some untowards happens .
P90X® is a complete 90-day home fitness system designed to get you in the best shape of your life. Created by trainer Tony Horton, the program includes 12 intense workouts that use resistance and body-
weight training, cardio, plyometrics, ab work, martial arts and
yoga, along with a nutrition plan, fitness guide and workout calendar .
This workout program can help enhance your chances to grow further help in allaroud development .
Medical treatment suggested by your doctor can be complemented using a variety of alternative therapies. Most of these therapies or
home remedies focus on strengthening your immune system
Hope this helps solves your query .Take care .All the best .Get well soon
Don't hesitate to come back in case of any further query .