You should also develop strong back and shoulder muscles through weight training, says Chris Volgraf, an exercise physiologist at the Longevity Center; research has shown that both strength training and resistance exercise can slow and even reverse bone loss in healthy postmenopausal women. As I wash down a vitamin D supplement with a glass of milk and reach for a five-pound barbell, he tells me that good carriage also comes from practice. So I call Steffany George, a dancer and movement teacher at New York City's famed Stella Adler Studio-of-Acting, who suggests that I root my feet to the ground, breathe deeply into the width of my ribs, and lift the crown of my head toward the sky. "people interpret hunched posture as a sign of gravity's triumph, and straight posture as a sign of energy, confidence, and engagement," she says, adding that she often envisions her spine as a strand of pearls that mustn't hit each other. She tells me about Elizabeth parrish, an older, master acting teacher who moves "like a silk curtain in the wind." I ask parrish for her secret. "Some women have a fit when they turn 40 or 50, but instead of gluing yourself to a number, glue yourself to life," she says. She seems to have a very positive view of aging, I say. "And you better have it," she says. "Why," I say, "because it's going to happen to me?"