New Jersey Search,New Jersey Local Search Finds How To Build Muscle Fast. So you want to build big muscles? Simple isn’t it? Just join a gym and hit those weights regularly and viola, in a couple of months, you will gain so much muscle mass that you are ready to take on any bodybuilding contest. Is it really that simple to build big muscles? Well, to gain muscle mass, there is much more than just hitting the gym regularly. Here are some muscle mass gaining tips :-