Does martial arts build muscle?

Does martial arts build muscle?
Yes, the practice of martial arts will lead to some muscle development. I have practiced wrestling for ten years, Brazilian Ju-Jitsu for a year and a half, and Kodakan Judo for about six months.
The physical workout and conditioning from practicing martial arts will make your body build some muscle while burning fat and speeding up your metabolism. If you are interested in major muscle development I would recommend that you start a steady weight lifting program and watch what you eat, in my opinion there is nothing worse than doing a hard work out and then gaining undesirable weight through a poor diet.
Right now I practice Judo twice a week, Brazilian Ju Jitsu 1-2 times a week and a kickboxing weightlifting program twice a week (developed by one of my friends who practices kickboxing). Martial arts will help however it will never yield the same muscle development as weight training.