I do all out drills working a combination of striking, sprawling, grappling and mass attacks 3-4 minute rounds. I believe that the average person can only fight full out for approximately 15-20 second, then the ATP in the muscles is reduced, bringing a persons strength down to aprox. 50% of their maximum. Lactic acid then begins to set in, after 30-40 second a person will become even weaker, their over all out put becomes approximately 35%, and continues to lower. The heart rate is up and the lungs begin to burn. Therefore conditioning is a very important component of martial arts. If you are well conditioned you can maintain the fight, and outlast even a larger opponent.
Anaerobic conditioning is great a great way to train your fighting skills.
I believe the philosophy of most martial artists is to finish the fight quickly, no more than 2-3 moves would be ideal, but the reality is this does not always happen, Murphy’s law states,” if something can go wrong it probably will”. It is important to be adaptive, well conditioned and able to fight in all possible ranges i.e.) Striking, trapping, grappling, (standing and on the ground) as well as weapons ranges knife, stick or baseball bat range. I have seen fights end very quickly, and some that have went on for more that 3 minutes. (You can do a lot of damage in 3 minutes) Usually the fight seems to go on longer if both individuals have little training. Martial arts training does not guarantee one will win the fight, but it does stack the odds in your favour. In turn this should allow a skilled player to finish the fight more quickly. Full out sparring, bag work and level changes with grappling as a last resort, are a great way to develop a well-conditioned body for self-defence. Prepare for the worst, chance favours the prepared mind & body in combat