Swimmer Michael Phelps (L) answers questions as his personal coach Bob Bowman looks on during a news conference at the Mecklenburg Aquatic Center in Charlotte, North Carolina May 14, 2009.

Olympic swimming gold medalist Michael Phelps, center, laughs while visiting patients at Levine Children's Hospital in Charlotte, N.C., Thursday, May 14, 2009.

 Swimmer Michael Phelps talks with Joseph Clark, 10, while visiting patients at the Levine Children's Hospital in Charlotte, North Carolina May 14, 2009.