While Angela's trying this ancient therapy, Dr. Oz explains the science behind acupuncture. Everyone knows that acupuncture involves sticking needles into your skin, but how might that cure what ails you? Dr. Oz says the needles stimulate endorphins and serotonin in your brain—natural chemicals that regulate pleasure and mood.

"But let's broaden the discussion, because it's not just about acupuncture," Dr. Oz says. "The reason I'm so excited and passionate about alternative medicine is … [because it is] the globalization of medicine."

Is "global medicine" right for your health needs?

Alternative medicines, Dr. Oz says, deal with the body's energy—something that traditional Western medicine generally does not. "We're beginning now to understand things that we know in our hearts are true but we could never measure," he says. "As we get better at understanding how little we know about the body, we begin to realize that the next big frontier … in medicine is energy medicine. It's not the mechanistic part of the joints moving. It's not the chemistry of our body. It's understanding for the first time how energy influences how we feel."