In competitive Martial Arts, your goal is to be at a peak for competition so your training is structured to make that happen. For each fight, your condition should be at a peak. Afterwards, you would take a short time time off to recuperate and assess where you are, then the process starts again incorporating any necessary changes as required.

Even Recreational Athletes and Traditional Martial Artists should structure their training around a goal. In traditional martial arts it would be an upcoming grading or a particular demonstration where you would want to peak.

To work flat out, day after day, month after month, year after year just would not work.