This is definitely one of those moments where I've gone and over thought something, and completely confused myself!
My Biology is very good, my Chemistry isn't great (Biochemistry is good though!) so bare with me if I don't understand straight away.
If all Anabolic Steroids are drugs which mimic Testosterone, then why can't you not run some compounds solo.
*God help me this sounds like the biggest newbie question! But don't worry, I've already taking the privilege of face palming myself in advance.