Bands around the chest and abdomen can show how hard a child is working to breathe.

WSJ: More Children With Sleep Problems Seek Overnight Tests

He said he is not going to do something for "chest beating" just to show people he is tough, two sources said.

CNN: STORY HIGHLIGHTS

He may not be the most influential celebrity in the country, but when the controversial host was hospitalized for chest pains and thus unable to do his show earlier this year it became front-page news across the country.

FORBES: Magazine Article