I'm 41, too, and torn between being inspired and feeling totally past it because of all the talk about how amazing her accomplishment is given that she's "middle aged." Excuse me? Who's middle aged? 
I don't really pay attention to the Olympics so I didn't hear about her until recently, but I think I'm going to start scoping out articles for information on working out at this age. I'll never be an Olympian, but I'm sure there's a lot I can learn from her.
Today one of my male co-workers (who swims regularly) remarked, "She's built like a man! She's a monster!" So I had to google up some photos, and wow, that woman is a freaking Amazon. Nothing mannish about her, just a really strong, lean, muscular woman. I should be such a monster.
"Fat-bottomed girls, they'll be riding today
So look out for those beauties, oh yeah..."
-- Queen, Bicycle Race