Am I too young or too old to use X3?
Certainly not! We have people from their teens all the way into their mid eighties who use the X3 daily! One of our oldest customers, who recently turned 81, has put on 15 pounds of muscle since starting with the X3!
There have been a lot of studies done on youth and strength training. They have not found any negative correlation between strength training and growth rates. What has been seen is an increase in overall health, reduced risk of injury, and an increase in self confidence. Here is one study. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3483033/