Carol Ross can’t stop smiling at dance practice as she shouts out the steps of a routine to members of her tap and jazz troupe for women age 50 and older. “I’ve been dancing my whole life, it’s the best,” says Ross, who founded the Rodeo City Wreckettes group 23 years ago at an age when many people are getting ready for retirement. Now 87, Ross and her husband and lifelong dance partner, John, also 87, have long known what more older adults are now discovering: Moving to music is one of the best ways to stay healthy. Medical professionals say it doesn’t matter if it’s Western line dancing, ballroom steps, salsa, tap, Zumba at the gym or with a group like the Wreckettes. “Dancing is one of the most powerful activities for older people,” says Julio Loya, a nurse and geriatric program coordinator at the Tucson Medical Center in Arizona. Dance, like other exercise, can help people lose weight, get stronger, reduce fall risk, increase mobility and flexibility and even improve brain health.…