Frank Cardia, a financial advisor and avid runner, discusses the importance of eating breakfast before a running event like a marathon. He recommends focusing on carbohydrates like oatmeal with dried fruit or a bagel with peanut butter. The breakfast should be eaten 3-4 hours before the start for full digestion. For later races, athletes can eat again 1-2 hours before to keep hunger away during the event. Choosing the right foods helps fuel performance without causing stomach problems.