I heard it gives you super human strength, so I was wondering if it could actually be used in a weight training regimen. Furthermore, would cocaine be beneficial?
Let me clarify if I may: this is a theoretical question and I am not concerned with practical issues like controlling the hallucinations or the negative side effects or anything else.
Post-Accepted Answer Clarification
I don't advocate the usage of drugs, and I myself refuse to even take supplements (even Creatine), but nevertheless I am curious and sometimes find myself asking questions that can be somewhat silly like the one I posted here.
No. PCP suppresses pain receptors. Much of the reason you stop lifting heavy things, or doing extremely strenuous activity is that the pain receptors in your body are telling you to stop. When you don't feel that feedback, you do damaging things to your body. Leprosy doesn't cause your fingers and toes to fall off, it damages the nerve endings so that you can't feel the tiny pain signals that you normally feel when you walk and touch things - without those signals, you end up doing things to damage your extremities to the point that you lose them.
Plus, PCP is highly illegal (in most countries), and very bad for you.
Even from a purely theoretical standpoint, the way you improve your overall performance in weightlifting is to push yourself to the point of muscle failure without injuring yourself, then providing the proper nutrition to respond to the need to be stronger.
Cocaine would screw up both of these goals. You would not hit your failure point properly, and the ruinous nutritional effects from its use would mean you'd fail to bounce back properly.
Let's never have this discussion again.
I think the negative side effects of those drugs would definitely outweigh any possible "benefit".
Remember, No drug will turn you into superman.