Does it ever! As for twitching, my husband says I practically dug a hole in his knee. (He twitched too!) I almost didn't go to this movie, because I don't like seeing non-dancers playing dancers. Remember Anne Bancroft's posturing as Anna Karenina in The Turning Point? You can fake singing, but not dancing. Then I learned Natalie Portman had started dance training at age four or five. She certainly has a dancer's body...small bust, long legs, visible rib cage, etc. She even waddles like a dancer when she walks. It's a virtuoso performance in the most intense movie I've seen in a long time.