Exercise should be moderate - too much is as bad as too little.
Tips
history
From the 《论语·先进》: Zigong asked which disciple was better, Shi (who overdoes things) or Shang (who falls short). Confucius replied, "Shi overshoots, Shang undershoots - overshooting is the same as undershooting." Foundational Confucian moderation.
usage
The classic cue for the "golden mean" (中庸) - any time someone argues for moderation, this idiom is the quickest way to frame it.
