Only a combat athlete must simultaneously display speed, strength endurance, cardiovascular endurance, explosive and grinding strength, ability to take punishment, and agility. Only in gymnastics and some forms of dance (ballet comes to mind) do elite participants need to be nearly as fit.
I guess the point of this article is to elaborate on the martial arts-fitness connection. While the two are related, I think it's more beneficial to think of martial arts training as an adjunct or an inspiration to get really fit.
From a fitness standpoint, martial-arts practice is better than nothing. But even experienced martial artists admit that it's not enough and that there are better ways to reach peak physical condition. Start with martial arts practice, and use your desire to reach the top levels of excellence in your art to inspire you to hit the gym and train for fitness.
