Can you strive for over 50 heart tips in 25 minutes? You can if you are a listener to this "peacast"!   This week, Dr. Kahn reviews ten classes of risk factors for the #1 killer in the world, heart disease, and shares up to 10 points of education on each class. That is a lot of information to consider.   A healthy lifestyle is the best defense against premature aging and illness. The dozens of tips discussed this week provide a helpful outline of the main activities to accomplish for health.