Yep, testosterone dramatically increases strength, almost eliminates recovery time, reduces the need for sleep and food to maintain muscle mass... the downside, you die at 50
My point is that PEDs really do take you to a different world physically, and there is zero - zilch competition between natural and enhanced athletes. When you are at that level, it's difficult to come off, go back to fatigue and weakness and small size, so you end up blasting for a decade and at that point your heart is the size of your head.