Doctors To Use 'Trained' Stem Cells To Heal Heart - During Heart Attack, Doctors Inject 'Trained' Stem Cells To Minimize Damage

After suffering two heart attacks and undergoing two surgeries, Bob Chirico does what he can to keep his heart strong - making it a point to exercise every day. "I get about four miles on the bike. And I get off the bike and I don't really have any problems. I have no angina, no shortness of breath," says Bob. But for Bob and millions of people who survive heart attacks, the damage is already done. Once you lose heart muscle, it's gone for good.