[maltyr]

For me, the common usage of the terms "training" and "working" are not the same. In most jobs, we perform a lot of "working," or applying known patterns, and very little "training," or learning new patterns.

Pro sports is flipped, and often each week the athletes are learning new tactics/counter-tactics based on their opponent, or adjusting their existing patterns to perfection, or grinding out exercise routines to be able to demand more from their body. Drills are required to "train" their body into being able to do these routines reliably on-demand, and new exercise routines are often the best at forcing your body to adapt and grow.

That said, even pro-athletes have rest periods once the season is over. Also, many of them incorporate rest into training routines as well. An NFL player usually will rest after game day for 1 or 2 days.