Physical Leveling: Gamer Style

For a long time I've been toying with the idea of trying to create a "game plan" for increasing physical fitness that allows a person to "evel up".  Of course, I'm not a professional trainer . . .and I'm obviously not in shape, YET, myself.  But I keep worrying at the idea, slowly accumulating ideas and information. 

I would love to know someone I could consult to work on this more.  And with no money, it's unlikely I will be able to find someone who wants to spend the time working with me.  Although there would be potential for . . .fame, money, notoriety?? . . . for it to be to their benefit.  Ah well, just another thing I keep simmering on the back burner.  If anyone has any ideas, let me know.