Good job. You are young, it´s pretty easy to maintain a decent physique at such age. How often do you work out? I´m in my late 30´s, been working our 2 - 3 days every week for many years, out of which the last 3 years have been mostly weight lifting with just a bit of calisthenics and cardio. Not exactly the healthiest type of workout but I do enjoy being big and strong ;)