24yrs and taken some form of amphetamine for 10 years. I know the side effects and I know to manage them. It improves my grades and overall activity in all aspects of my life. I have recently had the most extensive blood work done(9 total different test) and the test came out,for lack of a better word, great. Does this mean that I have learned to how to take this medicine properly and manage the side effect with acquired experience, almost expertly, or does my young age have more of an impact as to why I had great test results and not the management of being physically active and having a good diet?