What Doesn't Kill You Makes You Stronger

(source)

This is one of the best metaphorical parallels to working out and a healthy lifestyle that I have ever seen.  Bravo, bravo!

An active lifestyle is one of our best bets to ensure a long and healthy life.  So let's go out there and kick our life-mousetrap's butt, shall we?

What doesn't kill you makes you stronger, indeed.