The community likes the colors black and gold so please use them. Style wise the logo should be like an emblem. It should be very abstract in order to be suitable for web, print as well as tshirts, etc. Logos we like are:
Yet, we obviously don't want a copy that reminds people of any of these logos. The logo should feature a bodybuilder flexing his pecs and arms sidewards. A very rough drawing would be:
Remember that we want this to be very abstract so it shouldn't look like a photo. Neither should it look as realistic as the lamborghini bull. On the other hand it needs to resemble a brand and once people see the logo they need to immediately think of Bodybuilding.cc
ADDED for Clarification Purpose: The background of the site will be pretty much dark and black. A bit like http://www.optimumnutrition.com/
So the logo should really only be black and gold with gold being the colour used for the bodybuilder and the lines of the emblem as well as the text bodybuilding.cc. The looks should be very exclusive and VIP.