By be the best you I mean having your mind, body, and even your soul be at 100 percent and being and feeling great. Basically you are like the guy in the movie limitless except the positive effects are permanent. But the catch is what would you give to achieve that form?

I've been in that place before, and let me tell you, I would give almost anything to be there again.

reproductive ability

Some cash for a bottle of wine is usually enough.