Chess is an interesting example. If you want to get good at blitz, playing 1min games over and over is a terrible way to do it in my experience. Playing 3hr gam

Chess is an interesting example. If you want to get good at blitz, playing 1min games over and over is a terrible way to do it in my experience. Playing 3hr games and studying theory is painful and annoying yet way more useful for real improvement. I think the same concept applies to many things - learning an instrument is another example. Performing a piano piece at full speed over and over is fun, but focusing exclusively on the hard parts one hand at a time slowly is far more useful.