Photo: Alexandre Weinberger

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Bone Straight
A fact of life for all women: As we age, our bone mass inevitably decreases, says Sabrina Strickland, MD, associate professor of clinical orthopedic surgery at Weill Cornell Medical College in New York City. "The spine becomes compressed, and we lose height," she says. And if we're prone to osteoporosis, we're more likely to develop that very unyouthful hunch.

Stand Tall

One of the most effective ways to maintain strong bones: weight-bearing exercises, like squats, weight-lifting, and jogging, says Strickland. Equally important: strengthening your core muscles through activities such as Pilates and yoga, which can improve posture and balance.

Poor posture can worsen spinal compression, says New York City chiropractor Karen Erickson. The next time you find yourself slouching, try this (or try it right now): Stand up straight with your shoulders pulled back and your stomach tucked in. Avoid tilting your head forward or backward, keep your knees slightly bent and balance your weight equally on both feet. Feel the difference? Looking good!

Swimsuit, Vince Camuto, $106. Bracelet, Miansai.