"Pain is the feeling of weakness leaving the body" is a mantra seen on some distance-runner t-shirts. Yes, it's horribly insensitive to to victims of torture, and to those who suffer from chronic pain.
But in the context of training for a marathon one must admit that it's quite inspirational, in the same spirit as the Nietzsche/Conan-the-Barbarian aphorism, "That which doesn't kill me, makes me stronger". The implied theory of weakness --- a fluid rather like phlogiston --- is entertaining if fantastical. Like the phlogistonic hypothesis, weakness-as-liquid gets things backwards; that's entertaining too. And of course, too much stress without enough time for recovery is a good prescription for injury.
But for fun, take another proverb (from a recent Washington Post article re Scandinavian Americans): "There is no such thing as strong coffee; there are only weak people." Combine that in a syllogism with "Pain is the feeling of weakness leaving the body".
|Drink coffee until it hurts, and you'll get stronger!|