A muscular body without fitness is a classic question that until now is still little information about it. The question of having a muscular body without fitness is usually expressed by people who never do weight lifting or beginners who are still unsure of fitness. You may also check out http://musclesupplementtrials.com/testx-core-need-know-order-inside-info/ to find a fine muscle supplement.
Fitness exercise is not just the gym. You can also do it at home with simple tools like barbell and dumbbell. But if you want to build muscle better then you need more tools to form each part of the muscle.
Are there other sports that make up the muscles besides lifting weights? There are, almost all sports can build muscle, but because to raise the muscle mass requires heavy burden stimulation, of course, the most appropriate sport to build muscle is by fitness training.
Establishing a muscle without fitness is a necessity but back to your choice, how busy are you? whether it cannot take 1 hour to do weight training?
Our conclusion about forming a muscle without fitness is dependent on your body. If your body does have a muscular genetics then it can happen but if it does not have a genetically muscled and does not lift weights then our answer can not.