I think they should go retro and use the skinny guy on the beach with his girl. Then a big guy comes and kicks sand in his face and takes his girl. 6 weeks later he comes back with 50 more lbs on him because he drink or took some crappy supplement.
I remember seeing those all the time as a kid. I don't think they had enough money, for the pros to get involved, back then. Now they have plenty of money to go around.