Few things keep Janet Papelian from attending dancercise and aerobics classes at the Coral Gables Youth Center four times a week. Certainly not her age.

The 75-year-old says she feels more like a 50-year-old.

Papelian also enjoys the Current Events class offered at the center, which covers news items and encourages discussion, helping to keep the mind engaged.

The classes are very, very good and exactly what people like us [seniors] need, she said.

Many studies have linked longevity to maintaining a healthy body and mind. When it comes to the mind, many factors play a role, including genetics, lifestyle, diabetes, head traumas, and drug use.

The brain is unique in that we are born with all the cells were going to have, and we lose some everyday, said Dr. Allan Herskowitz, medical director of Neurological Services at Baptist Health Neuroscience Center. There are many factors that all play a role in cells deteriorating at a higher rate.

So what can a healthy person do to keep the mind sharp for as long as possible?

Herskowitz advises staying physically active and exercising the brain.

In South Florida, several centers and institutions offer a variety of classes, workshops and activities especially designed for seniors. And it doesnt have to be costly.

The Alliance for Aging serving Miami-Dade and Monroe counties, part of a national network of private nonprofits, provides a wide range of services and referrals for elders and caregivers. The organization especially focuses on serving low-income individuals.

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Healthy body, mind the key to longevity?