A small health update, great website to help with tracking your health and some reading suggestions

A couple of awesome websites, a book recommendation, and a possible app

It comes from the fact, in western (European) cultures and mythology primarily, that a silver bullet is the one thing needed to kill supernatural creatures, mainly werewolves. From that it grew into a way of speaking about a simple solution to difficult or intractable problems. E.g. "I may have a silver bullet for this problem."