How much more slowly injuries heal. Get a cut on your hand? That'll take two weeks to heal. Catch a cold and you're down for a solid week. I'm only in my 30's but I feel like a decade ago it would have only taken a few days to recover from a minor injury or illness.

Edit: Thanks for the concern guys. I really do appreciate it. I get checked out fairly regularly. "Two weeks" is probably an exaggeration. I just mean it takes longer than it used to.