Good Question: How Far Can We Push Our Bodies?

On Monday afternoon, 64-year-old Diana Nyad finally accomplished something she'd attempted five times over the past 35 years: swim without a shark cage from Cuba to Florida. So, that had us wondering: How far can we push our bodies? Heather Brown reports (2:47). <br><br><em>WCCO 4 News At 10 – Sept. 2, 2013</em>