Overview: We've got four doctors in the house today, and they have the scoop on everything from the latest medical headlines to the hottest weight-loss gadgets. Dr. Sanjay Gupta discusses what you can do today to prevent a heart attack and Dr. Ian Smith reveals a mirror that claims it could help you lose weight. Then, Dr. Roshini Raj demonstrates a machine intended to quiet snoring and Dr. Oz explains hands-only CPR. Plus, Rachael's making a Red Wine Risotto!