Being strong. It's like a secret super-power (not that I'm STRONG, just better than average) and it strengthens your bones and makes your body more robust in ge

Being strong. It's like a secret super-power (not that I'm STRONG, just better than average) and it strengthens your bones and makes your body more robust in general: “In robust training for this life, which is itself a continual fight with some form of adversary or other, the aim should be to form that solid and adamantine fiber which will endure long and serious attacks upon it, and come out unharmed from them, rather than the ability to perform sudden and brilliant feats, which often exhaust the powers in show, without doing any substantial good.” -- Walt Whitman