Rockers can often seem larger than life, but even they are human and prone to the same maladies that the rest of us have. During a recent episode of The Doctors, KISS' Gene Simmons stopped by to bring attention to heart issues, and while there he discussed his own history with atrial fibrillation.

For those unaware, atrial fibrillation is an irregular heartbeat condition that generally affects those with heart disease, high blood pressure, thyroid problems, kidney disease or diabetes. During The Doctors episode, Simmons spoke with Pfizer's Chief Medical Officer, Dr. Freda Lewis-Hall.

Simmons recalled an experience about 10 years ago where he first experienced dealing with it. "We were on tour somewhere and the stage temperature goes up by about 100 with all the stage lights. My heart would go, 'Ba boom, ba boom,'" says Simmons. "I started to get dizzy and perspire and was short of breath, so I called the doctor, who said, 'OK, here's what's going on. There's something called A-Fib,' and he went down through a list. It was a lot to take in."

After learning about A-Fib, Simmons says he was more careful and cognizant of how to stay on top of it. He explained that he gets plenty of rest and drinks lots of fluids, but even with that, he knows he's prone to it happening. When asked by Dr. Lewis-Hall if he was prone to any things that come with the rockstar lifestyle, he explained, "For the record, I've never been high or drunk, never smoked."

Simmons concludes, "You've got to lead a healthy lifestyle. Find out what's going on in the inside. You may not see it from the outside, but you'll feel it." The full segment, which also includes Simmons showing off some of the KISS memorabilia and specialty items to Dr. Lewis-Hall, can be seen in the player above.

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