If you want to have great sex until you're old and gray, Dr. Oz says you must stimulate your hormone system.

"Sex is all about a symphony of hormones," he says. "Testosterone puts the moan in hormone, so if you don't have enough testosteronewhich begins to decline in both men and women as you get olderthen you start to lose your libido."

Participating in physical activities and getting plenty of sleep are two ways you can rev up your sex drive naturally. "I'm not against taking supplements for these things if you have to, but there's nothing as good as doing it yourself," Dr. Oz says. "You've got this little place deep inside your brain called the pineal gland. When radiation hits that, it actually changes all of the circadian rhythms, all of the chemistry in your body."

Dr. Oz says June's lifestyle changes stimulated her brain's pineal gland, which led to a hormonal cascade and more orgasms. "This is not magic," he says. "It's reproducibleit happens over and over again."